I’m desperate please help
On a snow day, Alexandra created two snowmen in her backyard. Snowman A
was built to a height of 52 inches and Snowman B was built to a height of 38
inches. The next day, the temperature increased and both snowmen began to
melt. At sunrise, Snowman A's height decrease by 3 inches per hour and
Snowman B's height decreased by 2 inches per hour. Let A represent the
height of Snowman A t hours after sunrise and let B represent the height of
Snowman B t hours after sunrise. Write an equation for each situation, in
terms of t, and determine the interval of time, t, when Snowman A is taller
than Snowman B.

Answer:

Refer to photo above ......alright

The probability of rolling a sum of 7 when rolling a pair of six-sided number cubes is 1/6

It is a branch of mathematics that deals with the occurrence of a random event.

We need to count the number of ways in which the cubes will have a sum of 7

There are six possible ways to roll a sum of 7

(1, 6), (2, 5), (3, 4), (4, 3), (5, 2), and (6, 1).

Since each cube has six possible outcomes, there are a total of 6 x 6 = 36 possible outcomes when rolling two number cubes.

The probability of rolling a sum of 7 is the number of ways to roll a sum of 7 divided by the total number of possible outcomes:

Probability of rolling a sum of 7 = number of ways to roll a sum of 7 / total number of possible outcomes

Probability of rolling a sum of 7 = 6 / 36

Probability of rolling a sum of 7 = 1 / 6

Therefore, the probability of rolling a sum of 7 when rolling a pair of six-sided number cubes is 1/6

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A. Linear correlation coefficients is 0.880, Quadratic correlation coefficients is 0.894, Exponential correlation coefficients is 0.888. B. the best fit for this data.

Correlation coefficients are statistical measures that describe the relationship between two variables. They provide a quantitative measure of the strength and direction of the relationship between two variables.

To find the correlation coefficients, we need to calculate the coefficient of determination (r²) for each type of function.

Linear:

Using a calculator or spreadsheet, we can calculate the linear regression equation to be: y = 0.150x + 0.065

where x is the cost of the meal and y is the tip.

The coefficient of determination for the linear function is r² = 0.880, which rounds to 0.880.

Quadratic:

Using a calculator or spreadsheet, we can calculate the quadratic regression equation to be: y = 0.004x² + 0.225x - 0.226

The coefficient of determination for the quadratic function is r² = 0.894, which rounds to 0.894.

Exponential:

Using a calculator or spreadsheet, we can calculate the exponential regression equation to be: y = 0.070e^(0.087x)

The coefficient of determination for the exponential function is r² = 0.888, which rounds to 0.888.

Therefore, the correlation coefficients are:

Linear: 0.880

Quadratic: 0.894

Exponential: 0.888

The quadratic function has the highest coefficient of determination (r²), so it is the best fit for this data.

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$800 - $600 - $85 = $115

∴ Mr Sato has $115 left.

Answer:

172

Step-by-step explanation:

take $800 subtract $600 and then subtract $85

The value of y in the equation y = 3^x for the point (-2, y) is 1/9

From the question, we have the following parameters that can be used in our computation:

y = 3^x

The above function is an exponential function

Exponential functions are mathematical functions that involve a base raised to a power

Also, we have

(-2, y)

Substitute the known values in the above equation, so, we have the following representation

y = 3^-2

Evaluate

y = 1/9

Hence, the value of y is 1/9

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The statements are true by following the principles of congruency.

What are congruent triangles and their property?

Two  harmonious triangles have identical areas and  peripheries. Each of a triangle's sides and angles is an exact match to its  harmonious triangle's corresponding sides and angles. We can  use five different  parcels to show that any two triangles are  harmonious SSS, SAS, AAS, ASA, and RHS.  

The SAS criterion stands for the Side- Angle- Side criterion. This standard  countries that two triangles are  harmonious if they've matching sides and included angles on  contrary sides of each other.

Side- Side- Side criterion is appertained to as the SSS criterion. According to this standard, two triangles are  harmonious if their  separate triangles' three sides are equal to one another.

1. In the first figure,

KL = LN [L is the mid - point]

ML = LP [L is the mid - point which bisects it]

∠MLK = ∠ NLP [Vertically opposite angle]

By Angle side Angle property, both the triangles are congruent

2. In the given figure,

∠ABD = ∠CBD [As BD bisects the angle ABC]

BD = BD [Common side]

∠BAD = ∠BCD [As triangles ΔBAD ≅ ΔBCD]

By Angle - side - angle property, ΔABD ≅ ΔCBD

3. Given,

QS = SU [S is the midpoint]

QR ≅ ST [Given]

RS ≅ TU [Given]

By Side - Side - Side property, ΔQRS ≅ ΔSTU

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The requried value of (25-y) half dollars is 12.5 - 0.5y dollars.

Simplification involves applying rules of arithmetic and algebra to remove unnecessary terms, factors, or operations from an expression. The goal is to obtain an expression that is easier to work with, manipulate, or solve.

Here,
Assuming you want to find the value of a certain number of half-dollars when each half-dollar has a value of 50 cents, we can use the following formula:

Value = Number of coins x Value of each coin

Here, the number of half-dollars is (25-y), and the value of each half-dollar is 50 cents or $0.5. So, we can write:

Value of (25-y) half dollars = (25-y) x 0.5

Value of (25-y) half dollars = 12.5 - 0.5y

Therefore, the value of (25-y) half dollars is 12.5 - 0.5y dollars.

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Answer:

respuesta es : -810 xy

Step-by-step explanation:

:)

Answer:

To find the five-number summary of a data set, we need to find the minimum value, the first quartile (Q1), the median, the third quartile (Q3), and the maximum value.

We can first put the data set in order from smallest to largest:

14, 17, 19, 23, 25, 28, 30, 34, 40, 43

The minimum value is 14, and the maximum value is 43.

To find the median, we need to find the middle value. Since there are 10 numbers in the data set, the median is the average of the fifth and sixth values:

Median = (25 + 28) / 2 = 26.5

To find the first and third quartiles, we can use the median as a reference point. The first quartile (Q1) is the median of the lower half of the data set, and the third quartile (Q3) is the median of the upper half of the data set.

The lower half of the data set consists of the first five values:

14, 17, 19, 23, 25

The median of these values is:

Q1 = (19 + 23) / 2 = 21

The upper half of the data set consists of the last five values:

28, 30, 34, 40, 43

The median of these values is:

Q3 = (34 + 40) / 2 = 37

Therefore, the five-number summary for this data set is:

Minimum = 14

Q1 = 21

Median = 26.5

Q3 = 37

Maximum = 43

Looking at the answer choices, we can see that option C is the correct answer:

OA. 14, 19, 29, 34, 43

B. 14, 23, 26.5, 30, 43

C. 14, 19, 26.5, 34, 43

OD. 14, 23, 29, 30, 43

Therefore , the solution of the given problem of decimal comes out to be a ending decimal cannot therefore be represented by a repeating decimal.

Any number that can be expressed in the form of a ratio (not a fraction) of positive numbers is considered rational. A reasonable fraction is one that has a nonzero denominator. 1/2, 1/5, as well as 3/4 are a few examples of rational integers. "0" can also be expression in a variety of forms as a real function, such as 0/1, 0/2, or 0/3. However, 1/0, 2/0, 3/0, and so forth. It makes logical that there are seven. When two quantities are divided, a rational number results.

Here,

No, you cannot write a terminating decimal as a repeating decimal. A decimal number that terminates after a finite number of digits is referred to as a terminating decimal because it lacks an infinitely repeating pattern.

For instance, the decimals 0.25, 0.75, and 2.1 are all ending ones.

A repeating decimal, on the other hand, is a decimal number that has a regular pattern of digits following the decimal point.

For instance, the decimals

0.333, 0.142857142857, and 1.41421356 all repeat.

A decimal cannot be both terminating and repeating because repeating decimals have an unlimited number of digits while terminating decimals have a finite number of digits.

A ending decimal cannot therefore be represented by a repeating decimal.

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Check the picture below.

the correct option is the first one (-10, -3)

All real numbers x falling inside this range are those such that

-10 < x < -3. The numbers -10 and -3 are not part of the set, as shown by the parentheses.

In mathematics, a set is a logically arranged group of items that can be represented in either set-builder or roster form. Sets are typically denoted by curly brackets; for instance, A = 1, 2, 3, 4 is a set. Check the set symbols here as well. The way that sets are represented by a person is always the same: as a group of clearly defined objects or elements. A capital letter designates a set. The cardinal number of a set is the number of elements in the finite set. The number of elements in a set is determined by its order. It describes a set's size. Cardinality is another name for the set order.

From the question:

In interval notation, the set of all integers between -10 and -3 may be written as:

(-10, -3)

All real numbers x falling inside this range are those such that -10 <x <-3. The numbers -10 and -3 are not part of the set, as shown by the parentheses.

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complete question:

The supplied net's representation of the rectangle has a volume of 1,105.28 Plus 200.96 + 200.96.

You discovered through this activity that the formula of volume is V = l w h, which can alternatively be expressed as volume equals length times width times height. Volume is defined as the base area multiplied by the height, or V = B h. Spherical prisms and cubes are the only objects for which the form, V = l w h, is true.

Length times width equals the rectangle's area.

[tex]Area = length*width[/tex]

We have provided the size of a rectangle, which is 1,105.28, and the area of a circle, which is 200.96.

Each round base has the same area.

By summing all the forms, we can get the total volume of the figure.

As a result, [tex]1,105.28 + 200.96 + 200.96[/tex] is the volume of the image represented by the specified net.

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Answer:

Step-by-step explanation:

Let's call the distance from the tower's base to the end of the wire "d". According to the problem, the height of the tower is 8 feet greater than "d". We can write this as:

height of tower = d + 8

We also know that the wire is 40 feet long. The wire stretches from the ground to the top of the tower, so we can use the Pythagorean theorem to relate the distance "d", the height of the tower, and the length of the wire:

d^2 + (d + 8)^2 = 40^2

Expanding and simplifying this equation gives:

2d^2 + 16d - 960 = 0

Dividing both sides by 2 gives:

d^2 + 8d - 480 = 0

We can solve this quadratic equation using the quadratic formula:

d = (-b ± sqrt(b^2 - 4ac)) / 2a

where a = 1, b = 8, and c = -480. Substituting these values and simplifying, we get:

d = (-8 ± sqrt(8^2 + 4(480))) / 2

d = (-8 ± sqrt(2080)) / 2

d ≈ -25.73 or d ≈ 17.73

Since "d" represents a distance, it cannot be negative. Therefore, we choose the positive solution:

d ≈ 17.73

Now we can use the equation we derived earlier to find the height of the tower:

height of tower = d + 8

height of tower ≈ 17.73 + 8

height of tower ≈ 25.73

So the distance from the tower's base to the end of the wire is approximately 17.73 feet, and the height of the tower is approximately 25.73 feet.

The features of the rational function are listed below:

Domain: All real numbers except x = 5.

Range: All real numbers except f(x) = 3.

Vertical asymptote: x = 5

Horizontal asymptote: f(x) = 3

x-Intercept: x = 16 / 3

y-Intercept: f(0) = 16 / 5

In this problem we find the definition of a rational function:

f(x) = - 1 / (x - 5) + 3

Whose features introduced below must be derived:

Domain

Domain of rational functions are all real numbers expect when x - 5 = 0.

Dom {f(x)} = R - {5}

Range

Range of rational functions are all real numbers except horizontal asymptote.

Ran {f(x)} = R - {3}

Vertical asymptote

x = 5

Horizontal asymptote

f(x) = 3

x-Intercept

- 1 / (x - 5) + 3 = 0

1 / (x - 5) = 3

1 = 3 · (x - 5)

1 = 3 · x - 15

3 · x = 16

x = 16 / 3

y-Intercept

f(0) = - 1 / (0 - 5) + 3

f(0) = 1 / 5 + 3

f(0) = 16 / 5

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The dimensions of the triangle have been doubled in this case so, the perimeter will also be doubled, and the area will be four times.

The entire area filled by a triangle's three sides on a two-dimensional plane is known as the triangle's area. A = 1/2 b h is the basic equation for a triangle's area, where b and h represent the base and height of the triangle, respectively.

The triangle's perimeter is equal to the product of its three sides.

This formula can be used to determine any triangle shape, including scalene, isosceles, and equilateral triangles. Remember that the base and height of a triangle are perpendicular to one another.

In the given question the original dimensions of the equal sides = 2.5 units.

The new dimensions of the equal sides = 5 units.

The dimensions here got doubled.

Therefore, when the dimensions of the triangle are doubled, the perimeter also gets doubled and the area of the triangle will increase four times.

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Answer:

The total number of apples is 550

Step-by-step explanation:

12% - Turn into a fraction of 12/100

12/100

X = total number of apples

*Make another fraction of x the denominator and the 66 that are in good condition as the numerator*

12/100 = 66/X

Cross multiply

12 * X = 12x

66 * 100 = 6600

Divide

6600/12 = 12x/12 - cancel

6600/12= 550

X = 550

The critical t-value for a one-tailed test with 239 degrees of freedom and a significance level of 0.1 is -1.28.

What is standard deviation ?

Standard deviation is a measure of the amount of variation or dispersion of a set of data values. It is a statistical measure that indicates how much the individual data points deviate from the mean of the dataset.

To determine if there is sufficient evidence at the 0.1 level that the valve performs below specifications, we need to conduct a hypothesis test.

Let's define our null and alternative hypotheses as follows:

Null hypothesis (H0): The mean water pressure produced by the valve is equal to or greater than 5.1 lbs/square inch (μ = 5.1).

Alternative hypothesis (Ha): The mean water pressure produced by the valve is less than 5.1 lbs/square inch (μ < 5.1).

We will use a one-tailed t-test with a significance level of 0.1. The test statistic is calculated as:

t = (x - μ) / (s / √n)

where x is the sample mean (5 lbs/square inch), μ is the hypothesized population mean (5.1 lbs/square inch), s is the known population standard deviation (0.7), and n is the sample size (240).

Plugging in the values, we get:

t = (5 - 5.1) / (0.7 / √240) = -2.30

The critical t-value for a one-tailed test with 239 degrees of freedom and a significance level of 0.1 is -1.28.

Since our calculated t-value (-2.30) is less than the critical t-value (-1.28), we reject the null hypothesis and conclude that there is sufficient evidence at the 0.1 level to support the alternative hypothesis that the valve performs below specifications.

Therefore, the critical t-value for a one-tailed test with 239 degrees of freedom and a significance level of 0.1 is -1.28.

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Answer:

[tex]y=7,\:x=1[/tex]

Step-by-step explanation:

Given that:

[tex]y=4x+3,\:y=-2x+9\\\\\mathrm{Substitute\:}y=-2x+9\\\\\implies -2x+9=4x+3\\\\\implies -2x-4x = 3-9\\\\\implies -6x = -6\\\\\implies x = 1\\\\\mathrm{For\:}y=-2x+9\\\\\mathrm{Substitute\:}x=1\\\\y=-2\cdot \:1+9\\\\\mathrm{Simplify}\\\\y=7\\\\\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}\\\\y=7,\:x=1[/tex]

Answer:

y=4x-3

y= 1

Y = -2x+9

Y=7 ans

The total amount of fencing change by 236.66 feet.

The average rate of change is 2.3666.

It quantifies how much the function changed per unit on average over that time interval. The slope of the straight line connecting the interval's ends on the function's graph is used to calculate it.

First, When width is 200 ft then

length = 19000/ 200 = 95 feet

and, When width is 300 ft then

length = 19000/ 300 = 63.33 feet

1) The amount of Fencing

= 3 x width + 2 x length

= 3 x 200 + 2 x 95

= 600 + 190

= 790 feet

2) The amount of Fencing

= 3 x width + 2 x length

= 3 x 300 + 2 x 63.33

= 900 + 126.66

= 1026.66 feet

So, the Change is

= 236.66 feet

Thus, the avreage rate of change

= 236.33/ (300- 200)

= 2.3666

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No, it is not possible for Mario to have drawn this figure.

The circumference, which is the distance around the object, the diameter, which is the length of a circle measured from one end to the other and passing through its center, and the radius, which is equal to half of the diameter, are the three key characteristics.

If two tangents to a circle meet at a point outside the circle, they must be parallel to each other.

If the two points where the two tangents meet the circle separate the circle into two semicircles, then the center of the circle must lie on the line containing the two points.

However, since the tangents are parallel, they do not intersect the line containing the two points, and therefore, the center of the circle cannot lie on this line.

This contradicts the definition of a circle, which states that the center of a circle is equidistant from all points on the circle.

Therefore, Mario's reasoning is flawed, and it is not possible for him to have drawn this figure.

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All four statements are true. The first statement is true because 24g4+18g2 can be factored into 6g2(4g2+3g). The second statement is true because 4g2−g can be factored into g2(4−g). The third statement is true because 9g3+12 can be factored into 3(3g3+4). The fourth statement is true because 35g5−25g2 can be factored into 5g2(7g3−5).

Parenthesis are punctuation marks that are used to set apart a clause or phrase within a sentence. They are also known as round brackets and are used to add additional information or asides to a sentence. Parenthesis are used to provide additional information, to emphasis a point, to give examples, to define terms, and to explain ideas.

The first statement is 24g4+18g2=6g2(4g2+3g). This translates to 24g to the fourth power plus 18g squared equals 6g squared left parenthesis 4g squared plus 3g right parenthesis. The second statement is 4g2−g=g2(4−g). This translates to 4g squared minus g equals g squared left parenthesis 4 minus g right parenthesis. The third statement is 9g3+12=3(3g3+4). This translates to 9g cubed plus 12 equals 3 left parenthesis 3g cubed plus 4 right parenthesis. The fourth statement is 35g5−25g2=5g2(7g3−5). This translates to 35g to the fifth power minus 25g squared equals 5g squared left parenthesis 7g cubed minus 5 right parenthesis.

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8.347 rounded to the nearest hundredth is 8.35

The complete sentence is 8.347 rounded to the nearest hundredth is 8.35.

Given sentence is

8.347 rounded to the nearest hundredth is ......

To find the nearest hundredth value

here, count the place value from left to right

place value of 7 is ones.

place value of 4 is hundredth.

So, 8.347 rounded to the nearest hundredth is 8.35.

Therefore, the complete sentence is 8.347 rounded to the nearest hundredth is 8.35.

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Answer:

the bag contains $10.89.

Step-by-step explanation:

Let's start by using algebra to represent the number of coins in terms of one variable. Let x be the number of pennies in the bag. Then:

The number of nickels is 4 more than the number of pennies, so there are x + 4 nickels.

The number of dimes is 30% of the total, so there are 0.3 * 50 = 15 dimes.

The number of quarters is the remaining coins: 50 - (x + x + 4 + 15) = 31 - 2x.

To find the total amount of money, we need to multiply the number of each type of coin by its value and add them up. Using the values of the coins:

Pennies: x * $0.01

Nickels: (x + 4) * $0.05

Dimes: 15 * $0.10

Quarters: (31 - 2x) * $0.25

Adding these expressions and simplifying, we get:

Total = 0.01x + 0.05(x + 4) + 0.10(15) + 0.25(31 - 2x)

= 0.01x + 0.05x + 0.20 + 1.50 + 7.75 - 0.50x

= 0.06x + 9.45

Now we need to find x, the number of pennies. We know that 14% of the coins are pennies, so:

0.14 * 50 = 7 = x + (x + 4) + 15 + (31 - 2x)

Solving for x, we get:

7 = 50 - x - 19

x = 24

So there are 24 pennies, 28 nickels, 15 dimes, and 3 quarters in the bag. The total amount of money is:

Total = 0.06(24) + 9.45 = $10.89

Therefore, the bag contains $10.89.

The solution to the division problem 2x³-4x²-3x-9/ x-3 is 2x² + 6x + 15

Synthetic division is a method of polynomial division used to divide a polynomial by a linear expression of the form x - a, where a is a constant. It is a shorthand way of performing long division for polynomials and is particularly useful when the divisor is of the form x - a, as it eliminates the need for writing out the full divisor in each step of the division process.

The advantage of synthetic division is that it is quicker and easier than long division, especially for dividing polynomials by linear expressions. It can also be used to evaluate a polynomial at a specific value of x, by setting the divisor to x - a and using the result in the final row of the synthetic division as the value of the polynomial at x = a.

We can use long division to solve this problem:

        2x² + 6x + 15

   ---------------------

x - 3 | 2x³ - 4x² - 3x - 9

       - (2x³ - 6x²)

       ---------------

              2x² - 3x

              - (2x² - 6x)

              ------------

                     3x - 9

                     - (3x - 9)

                     --------

                            0

So the solution to the division problem is:

2x² + 6x + 15

Therefore, the answer is (none of the above).

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The bug population whose growth shows geometric sequence ,on Week 26 the value is approximately 9,461.01.

What is a geometric sequence, and how can we use it to predict the growth of a population?

A geometric sequence is a sequence of numbers where each term is obtained by multiplying the previous term by a fixed number called the common ratio. Mathematically, a geometric sequence can be expressed as:

[tex]a, ar, ar^2, ar^3, ...[/tex]

where a is the first term, r is the common ratio, and each subsequent term is obtained by multiplying the previous term by r.

Calculation of  the bug population on week 26 -

To solve this problem, we can use the formula for a geometric sequence:

[tex]a_n = a_1 \times r^{n-1}[/tex]

Where:

[tex]a_n[/tex] = the nth term in the sequence

[tex]a_1[/tex] = the first term in the sequence

r = the common ratio between terms

n = the term number

We are given that the bug population follows a geometric sequence, with a first term of 500 and a second term of 600. To find the common ratio, we can divide the second term by the first term:

[tex]r = 600 / 500 = 1.2[/tex]

Now we can use the formula to find the population on Week 26:

[tex]a_{26} = 500 \times 1.2^{(26-1)}[/tex]

[tex]a_{26} = 500 \times 1.2^{25}[/tex]

Evaluate this expression to get:

[tex]a_{26}[/tex] ≈ [tex]9,461.01[/tex]

Therefore, the bug population on Week 26 is approximately 9,461.01.

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Solving a system of equations we will see that x = 2.

We know that the two rectangles are similar, so if k is the scale factor between them, we can write:

3x - 1 = k*4

8x -1  = k*12

So we have a system of equations.

Taking the quotient between the two equations we will get:

(3x - 1)/(8x - 1) = k*4/k*12

(3x - 1)/(8x - 1) = 4/12

3x - 1 = (1/3)*(8x - 1)

3x - 1 = (8/3)*x - 1/3

3x - 8/3x = 1 - 1/3

(1/3)*x = 2/3

x = 3*(2/3) = 2

x = 2

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The probability that the sample proportion will be at most 2% more than the population proportion is approximately 0.7007.

The sample size is n = 197, and the population fraction of complaints resolved by the Better Business Bureau is 0.75. P(p 0.77), where p is the sample percentage, is the chance that the sample proportion is no more than 2% greater than the population proportion.

The distribution of the sample proportion can be approximated by the central limit theorem as having a mean of 0.75 and a standard deviation of sqrt[(0.75)(0.25)/197] = 0.038.

The sample proportion is then standardised as follows:

Z = (p - μ) / σ = (0.77 - 0.75) / 0.038 = 0.526

We are looking for P(Z 0.526). We can determine that P(Z 0.526) = 0.7007 by using a calculator or a conventional normal distribution table.

Hence, 0.7007 is around how likely it is that the sample proportion will be at most 2% higher than the population proportion.

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