A letter home to the parents of seniors at Westgate High School says, "a simple random sample of 30 Westgate seniors that took the SAT-M test this year produced a mean of 512 and a standard deviation of 95. A confidence interval for the true mean for all WHS seniors is 512.00 ± 47.8." The confidence level for this interval is Group of answer choices

Answers

Answer 1

Answer:

It's 99%

Step-by-step explanation:

It just is.

Answer 2

A confidence interval for the true mean for all WHS seniors is 512.00 ± 47.8." The confidence level for this interval is 99%. The correct option is D.

What is the percentage?

The percentage is defined as "out of 100." Similar to fractions and decimals, percentages are used in mathematics to represent subsets of a whole. When expressing a sum as a percentage, 100 equal components are regarded to make up the whole.

A percentage is a figure or ratio stated as a fraction of 100 in mathematics. Divide the amount by the total value to get the percentage, then multiply the resulting number by 100.

Since one percent (symbolized as 1%) is equal to one-hundredth of something, 100 percent stands for everything, and 200 percent refers to twice the amount specified.

Therefore, the correct option is D, 99%.

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The question is incomplete. Your most probably complete question is given below:

90%

92%

95%

99%

over 99.9%


Related Questions

How do you write 35 feet above sea level? A) -35 B) +35 C)/35 D) 35%​

Answers

Answer:

b

Step-by-step explanation:

You are in charge of renting SUVs and vans for your family reunion, and you want to minimize costs. You know that at most 40 children are attending and that at least 36 adults are attending. Each SUV accommodates 4 children and 3 adults, and costs $85 to rent. Each van accommodates 4 children and 4 adults, and costs $95 to rent. A. Set up the linear programming problem by writing the objective function as well as the system of constraints. B. How many SUVs and vans should be rented to minimize cost

Answers

Answer:

4 SUV, 6 vans

Step-by-step explanation:

Let x represent the number of SUV rented, and let y represent the number of vans to be rented.

Each SUV accommodates 4 children while Each van accommodates 4 children. Since there are at most 40 children who are attending, hence:

4x + 4y ≤ 40          (1)

Also, Each SUV accommodates 3 adults while Each van accommodates 4 adults. Since there are at most 36 adults who are attending, hence:

3x + 4y ≥ 36          (2)

The system constraints are:

4x + 4y ≤ 40          (1)

3x + 4y ≥ 36          (2)

x, y ≥ 0

b) The SUV cost $85 to rent and the van cost $95 to rent. Therefore the cost equation is:

Cost = 85x + 95y

From the graph, the solution to the constraints are (0, 10) and (4, 6).

At (0, 10); Cost = 85(0) + 95(10) = $950

At (4, 6); Cost = 85(4) + 95(6) = $910

Therefore the minimum cost is at (4,6). That is only 4 SUV and 6 vans should be rented

What kind of growth model (pattern) is shown in the table?
X
1
2
3
4.
5
у
5
25
125
625
3,125
square root
linear
expggential
quadratic

Answers

The kinda growth model patter is shown in the table is 5

Answer:

Step-by-step explanation:

exponential

Find the area of this polygon

Answers

Answer:

To find the area of a regular polygon, all you have to do is follow this simple formula: area = 1/2 x perimeter x apothem. Here is what it means: Perimeter = the sum of the lengths of all the sides. ... The formula for the area of a regular octagon is 4.828 s², where s is the length of any side.

Answer:

iahaksgsknslsnsknsjsmzjsjsjsksksns

Find the value of x.
b
(23x+1)
52°
3

Answers

Answer:

Step-by-step explanation:

Adjacent angles when a line crosses another line must have a sum of 180 degrees.

52+2^(3x+1)=180

2^(3x+1)=128, 128=2^7 so

2^(3x+1)=2^7 which means

3x+1=7

3x=6

x=2

Can y’all help me on question 8?!

Answers

Answer: Car rental A and B

Step-by-step explanation:

Answer:

B. Car rental Company B

D. Car rental Company A

Step-by-step explanation:

Car rental Company A: $16.50 a day

Car rental Company B: $16.6667 a day

I hope this helps

0.45m-9=0.9m
Subtract 0.45m from both sides

Answers

Answer:

Step-by-step explanation:

If you're trying to isolate the variable the first thing you would want to do is actually add 9 to both sides.

Answer:

-9 = 0.45m

Step-by-step explanation:

0.45m - 9 -0.45m= 0.9m - 0.45m

What is - 0.9 as a decimal

Answers

Answer: -0.9 as a decimal is -0.9

but if you meant as a fraction, then it's -9/10

Step-by-step explanation:

Answer:

0.9

Step-by-step explanation:

There Are Several Ways To Write 0.9.

1) 0.9

2)0.90

3)9/10

4)90/100

Hope this was able to help you!

-TheAnimeCatUwU

#LearnWithBrainly

please help PLEASE HELP!!!!!!!!!!!!!!!

Answers

Step-by-step explanation:

you have to have some number for someone to solve it

Add and
subtract fraction. X+5=23

Answers

X+5=23
23-5=x
18=x
Bdjxhdhdbhdudbsns

Pls help I’ll brainlest ASAP

Answers

Answer:

g = 34

Step-by-step explanation:

One estimate for the ideal body weight of a woman is shown below.

59kg+2.6kg for each inch over 5 feet.

A) Find the linear model For an estimate of the ideal weight of a woman using W for ideal body weight (in kilograms) and H for the height over 5 feet (in inches)

Answers

this is tough, if you explain the question better I can help!

Answer:

Step-by-step explanation:


At a store, a hat has a regular price of x dollars. During sale, the price of the hat
is discounted by 20%. The expression 0.8x describes the discounted price, in dollars,
of the hat. Which expression also describes the discounted price, in dollars, of the hat?

Answers

Answer:

x - 0.2x

Since the price of the hat is labelled = x,

The percentage discount on the hat price = 20%,

Thus, the discount = 20% of the price marked

= Twenty percent of x

=0.2 x =0.2 x

Therefore, the hat's new price = Marked price - Discount

= x- 0.2  = x

Answer:

D) x - 0.2x

Step-by-step explanation:

The hat has a regular price of x dollars.

This price is reduced by 20% so the relevant expression for the discount is; 20% * x or; 0.2x

The discounted price will be the price of the hat less the discount which means the formula will be;

= Price - discount

= x - 0.2x

If K = {(x, y) Ix-y=5), is Set K a function?
1. Νο
2. Yes

Answers

Answer:

no its not

Step-by-step explanation:

(-3x10^3) x (4x10^6)

Answers

Answer:

not sure but i got -12000000000 in the calculator

Step-by-step explanation:

−12x1001001 if you are simplifying

Determine if the sequence is Arithmetic or Geometric:
16, 8, 4, ?

Answers

Answer:

It is geometry

Step-by-step explanation:

DOES ANYONE KNOW THIS???!?!?​

Answers

Answer:

15%

Step-by-step explanation:

56-32/32×100

24/32×100=75

100-75=15%

Answer:

15%

Step-by-step explanation:

is 4.92 repeating irrational or rational ?

Answers

Answer:

Irrational, since it doesn't have a definite value. (It's not like 3.75 or 5)

Hope that helps!

Step-by-step explanation:

Jacob and Jackson are having a fishing competition.
Each boy adds the lengths of all the fish he catches,
and the winner is the one with the greatest total length of fish.
The following shows the lengths of the fish each boy caught.

Jacob: 512in., 818in.,678in.,1234in.

Jackson: 634in., 578in., 718in., 634in., 514in.

Who won the competition and by how much?

Answers

Answer:

a

Step-by-step explanation:

because Jackson has the most numbers so it would make more sense for it to be a tell me if I'm right or wrong

f(x) = 2x^2 +4/ x^2 +5x+6 find vertical and horizontal asymptotes (show work) 100 points please help):

Answers

Answer:

tkdykxkgxgjztkxykxukx

Step-by-step explanation:

xgmxykxtkzmtzylcl

Un objeto es lanzado verticalmente hacia arriba con una rapidez de 34 m/s
A. ¿que rapidez tendrá cuando le faltan 12 m para alcanzar la altura máxima?
B. ¿qué tiempo tarda en alcanzarla?

Answers

Answer:

a

Step-by-step explanation:

aa

Mark ran 875 miles in the track club this year . Mark ran in 52 track meets and ran the same number of miles in each . how many miles did Mark run in each track meet write answer in a mixed number ​

Answers

Answer:

16[tex]\frac{43}{52}[/tex]

Step-by-step explanation:

875/52 = 16[tex]\frac{43}{52}[/tex]

A farmer sells 7.8 kilograms of pears and apples at the farmer's market. 3/4 of this weight is pears, and the rest is apples. How many kilograms of apples did she sell at the farmer's market? ;)​

Answers

Given that a farmer sells 9.5 kilograms of apples and pears at the farmer's market and of the weight is the apples and the rest is the pears.
We are to find the number of kilograms of pears that she sold at the farmer's market.
Given that
of the weight of 9.5 kilograms is the apples.
So, the total weight of the apples is given by

Therefore, the weight of the pears is given by

Thus, the farmer sold 1.9 kilograms of pears at the farmer's market.

The farmer sold 1.95 kg of apples at the farmer's market.

What is an expression?

In mathematics, expression is defined as the relationship of numbers, variables, and functions using mathematical signs such as addition, subtraction, multiplication, and division.

Given that a farmer sells 7.8 kilograms of pears and apples at the farmer's market. 3/4 of this weight is pears, and the rest is apples.

Since 3/4 of the weight is pears, then 1/4 of the weight must be apples.

We can find 1/4 of the weight by dividing 7.8 by 4:

7.8 kg ÷ 4 = 1.95 kg

So the farmer sold 1.95 kg of apples at the farmer's market.

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find x (geometry) plz help

Answers

Step-by-step explanation:

[tex] \frac{ \sin(x) }{12} = \frac{ \sin(75) }{22} \\ \sin(x) = \frac{12 \sin(75) }{22} \\ \sin(x) = 0.5268 \\ x = 31.79 = 31.8[/tex]

HELP FAST FAST FAST PLS ILL LOVE YOU FOREVER <3
Mr. Lewis showed his friend part of the prime factorization of 70. Fill in the missing factor.
2 x _ x 7

Answers

Answer:

5

Step-by-step explanation:

2x5x7=70

If f(x) = 3x - 7, find f(-1)

Answers

-1 = 3x - 7
Add +7 to each side
6 = 3x
Divide each side by 3
X = 2


f(-1) = 3 * 2 - 7

Solve y2 = 64, where y is a real number.
Simplify your answer as much as possible.

Answers

Answer:

See step by step

Step-by-step explanation:

If you are referring to

[tex]y {}^{2} = 64[/tex]

Then the answer is 8 or -8,

If you are referring to

[tex]y \times 2 = 64[/tex]

Then answer is 32 or -32 it depends on which one you are referring to.

5.
(x + 10°)
(x + 20°)

Answers

What are you asking here? I need more information to solve please

An engineer makes a model of a bridge using a scale of 0.5 cm = 3 feet. The length of the actual bridge is 123 feet. What is the length of the model?

Answers

Answer:

20.5 cm

Step-by-step explanation:

Set up a proportion where x is the length of the model in cm:

[tex]\frac{0.5}{3}[/tex] = [tex]\frac{x}{123}[/tex]

Cross multiply and solve for x:

3x = 61.5

x = 20.5

So, the model's length is 20.5 cm

A soccer team must raise at least $660 buy new equipment. To reach this goal, each of the 12 soccer players sells tickets
to a game. Tickets cost $2.75 each. The school athletics fund donates an additional $10 per player. The situation is
modeled by the inequality shown,

12(2.75r + 10) 660

How many tickets must each player sell to raise the money?

A at least 19
B at least 17
C at least 16
D at least 20

Answers

Answer:

At least 17

Step-by-step explanation:

12(2.75r+ 10)≥ 660

33r+120≥ 660

33r≥ 540

r≥ 16.36

You can't sell 0.36 of a ticket to they need at least 17

2+2=5 if im not wrong
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