For the following report about a statistical​ study, identify the items below: to find the​ public's views on obesity​, researchers waited outside a fast food restaurant they had randomly selected from a list of such establishments. they stopped every 25th person who came out of the restaurant and asked whether he or she thought obesity was a serious problem.
1. The population:____.
a. all people except those who work at fast food restaurantfast food restaurants.
b. people.
c. every 25th person leaving the restaurant.
d. all people that go to fast food restaurantfast food restaurants.
2. The population parameter of interest:_____.
a. proportion who think obesity is not a serious problem.
b. proportion of people who think obesity is a serious problem.
c. proportion of people who answered the survey.
d. proportion of people who did not answer the survey.
​3. The sampling frame:_____.
a. all people except those who work at fast food restaurantfast food restaurants.
b. people who think obesity is a problem.
c. every 25th person leaving the restaurant.
d. restaurant customers.
​4. The sample:____.
a. people.
b. every person leaving the restaurant.
c. every 25th person leaving the restaurant.
d. all people except those who work at fast food restaurantfast food restaurants.
5. The sampling​ method, including whether or not randomization was employed:_____.
a. questionnaire​ (non-random).
b. not​ specified, non-random.
c. not​ specified, but at least​ "random".
d. systematic sampling.
​6. Any potential sources of bias you can detect and any problems you see in generalizing to the population of interest:
A. Response bias is possible. The study is conducted in such a way as to achieve a desired response that may be different from the population in general.
B. Non-response bias is possible. Since some people leaving the restaurant may not respond to the​interview, the study may misrepresent the general population.
C. Undercoverage bias is possible. Since those interviewed just left a fast food restaurant commafast food restaurant, their opinions about obesity may differ from the population in general.
D. There is no indication of bias.

Answer:

2. 12 x 5

60

3. 10.8+10.8+5.1+5.1

31.8

hope it helps

Answer:

B

Step-by-step explanation:

(x) -7+3=-4

(y) 4-2=2

(-4,2)

Answer:

orange

Step-by-step explanation:

Answer:

use Pythagoras theorem

the missing side is base

Step-by-step explanation:

pythagoras theorem

h^2 = p^2 + b^2

73^2 = 48^2 + b^2

5329 = 2304 + b^2

5329 - 2304 = b^2

3025 = b^2

√3025 = b

55 = b

9514 1404 393

Answer:

  sometimes

Step-by-step explanation:

For positive numbers, multiplying by a factor greater than 1 increases their value:

  (1/2) × 2 = 1 > 1/2

For negative numbers, multiplying by a factor greater than 1 decreases their value:

  (-1//2) × 2 = -1 < -1/2

So, "sometimes" the product will be less than the given fraction.

Answer:

300

Step-by-step explanation:

Multiply the length which is 30 cm by 10 to give you the length in mm.

Answer:

0.3

Step-by-step explanation:

Answer:

(5,53°) or (5,53.13010235°) if you want an exact value.

Step-by-step explanation:

Polar coordinate is in [tex]\displaystyle{(r,\theta)}[/tex] form and rectangular coordinate is in [tex]\displaystyle{(x,y)}[/tex] form.

To convert from rectangular coordinate to polar coordinate, you’ll have to know that:

[tex]\displaystyle{x=r\cos \theta}\\\displaystyle{y=r\sin \theta}[/tex]

Above is crucial when it comes to converting from rectangular coordinate to polar coordinate, or other way around. The thing is to convert from rectangular to polar, you’ll also have to know radius too which you can find by:

[tex]\displaystyle{r=\sqrt{x^2+y^2}}[/tex]

We know that x = 3 and y = 4, substitute in the formula:

[tex]\displaystyle{r=\sqrt{3^2+4^2}}\\\\\displaystyle{r=\sqrt{9+16}}\\\\\displaystyle{r=\sqrt{25}}\\\\\displaystyle{r=5}[/tex]

We know that radius is 5. We will have to find the theta next, first substitute in the conversion:

[tex]\displaystyle{3=5\cos \theta}\\\displaystyle{4=5\sin \theta}[/tex]

Since this can generally be found through calculator as it’s not a part of special triangle - can be found using hand method - The approximation of both theta’s values are 53°.

Hence, the polar coordinate is (5,53°) or (5,53.13010235°) if you want an exact value.

Answer:

Aw don't cry <3

It would be easier if you use a website with a graph! There is a website called "desmos" and if you search up desmos graphing calculator you will find it. Type in the points in the website, and it would add in the points for you.

but here is a piece of key information:

Make [tex]\frac{3}{4}[/tex] into a decimal. That would be 0.75.

Since it says "of the way from", count the boxes in the graph from each point.

Hope this helps! ^.^

Answer:

Outcomes are { L, RL, AL, RAL, ARL }

Associated X values are { 1, 2, 2, 3, 3 }

Step-by-step explanation:

As given,

left  = (L),

right = (R)

goes straight ahead  = (A)

Now,

The Sample space become = { L, RL, AL, RAL, ARL }

In L -

Number of cars = 1

In RL-

Number of cars = 2

In AL-

Number of cars = 2

In RAL-

Number of cars = 3

In ARL-

Number of cars = 3

Answer:

Add them

Step-by-step explanation:

Answer:

-y-6/2

Step-by-step explanation:

Answer:

− y-6/2

Step-by-step explanation:

The total cost of materials can be found from a list of materials based on the market unit rate.

The correct responses are;

Reasons:

Part A: The given expression representing the purchase is presented as follows;

Purchases = 180·s + 9·p + 36·l

Where;

s = Screws

P = Posts

l = Lumber

The factored expression is found as follows;

Purchases = 180·s + 9·p + 36·l = 9 × 20·s + 9·p + 9 × 4·l, which gives;

180·s + 9·p + 36·l = 9 × (20·s + p + 4·l)

The factored expression is; 9 × (20·s + p + 4·l)

Part B: The costs are;

100 screws  = $6.99

1 posts = $16.40

10 pieces of lumber = $88.20

The materials Roberto need to buy are;

180 screws, which can be obtained by buying 2 cartons of screws.

9 posts, which is obtained by buying 9 pieces of posts.

36 lumber which can be obtained by buying 4 × 10 pieces = 40 pieces of lumber.

Therefore, the, material Roberto needs to buy are;

2 cartons of screws

9 pieces of posts

40 pieces of lumber

Part C: The total cost of the materials are therefore;

2 cartons of screws × $6.99 per carton = $13.98

9 pieces of posts × $16.40 per piece = $147.6

4 Sets of 10 pieces of lumber × $88.20 per set = $352.8

The total cost = $13.98 + $147.6 + $352.8 = $514.38

Learn more here:

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Answer:

Roots are also called x-intercepts or zeros. A quadratic function is graphically represented by a parabola with vertex located at the origin, below the x-axis, or above the x-axis. Therefore, a quadratic function may have one, two, or zero roots. are given by the quadratic formula.

Step-by-step explanation:

Step-by-step explanation:

Option c shows line segment because it has no arrow marks

Answer:

Step-by-step explanation:

12²+18²=144+324=468

22²=484

468<484

12²+18²≠22²

it is not a right angled triangle.

Answer:

Kindly check explanation

Step-by-step explanation:

H0 : π ≥ 0.92

H1 : π < 0.92

At α = 0.05

Left tail

Z0.05/2 = Z0.025 = - 1.645

The test statistic

Zstatistic :

(m - p) / σ

Sample size, n = 85

m = 74/85 = 0.87

p = 0.92

σ = sqrt(p(1 - p) /n)

σ = sqrt(0.92(1 - 0.92) / 85)

σ = sqrt(0.0008658)

σ = 0.0294258

σ = 0.0294

Zstatistic :

(m - p) / σ

(0.87 - 0.92) / 0.0294

Zstatistic = −1.700680

Zstatistic = - 1.70

Decision region :

Reject H0: if ;

Zstatistic < Zcritical

-1.70 < - 1.645

Since,

Zstatistic < Zcritical ; then Reject H0.

Answer:

Rational because it's a whole number

hope this helps

have a good day :)

Step-by-step explanation:

Answer:

it’s A. (f+g)(x) is greater than or equal to 3 for all values of x.

Step-by-step explanation:

I got it right on the test.

Answer:Yoo the anser is A

Step-by-step explanation:

for the makeupo math corse

-(f + g)(x)  3 for all values of x

Answer:

-30n+42

Step-by-step explanation:

You have to use distributive property.

Multiply 6 with -5n which is -30n. Then, Multiply 6 with 7 which is 42. Since, 5n is negative the product is also negative, and since 7 is positive the product is positive. Therefore you will get, -30n+42.

I hope this helps!

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The simplified form of 6(-5n + 7) is -30n + 42.

To simplify the expression 6(-5n + 7), we apply the distributive property. The distributive property states that when we multiply a number outside the parentheses by an expression inside the parentheses, we must multiply it by each term inside the parentheses.

In this case, we have 6 multiplied by the expression (-5n + 7).

Multiplying 6 by -5n gives us -30n, and multiplying 6 by 7 gives us 42.

So, combining these results, we get -30n + 42.

This simplified expression, -30n + 42, cannot be further simplified because there are no like terms to combine.

Therefore, 6(-5n + 7) simplifies to -30n + 42.

To learn more about the expression;

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Answer:

10

Step-by-step explanation:

5*2 is 10

Answer:

30 minutes is half of an hour

so multiply both 30 and 5 by 2

So for every hour, Jenny hikes 10 kilometers

Answer:

Step-by-step explanation:

Parallel lines have same slope.

y = mx + b

Slope = m  & y-intercept = b

x - 5y = 15

   -5y = -x + 15

      y = [tex]\frac{-1}{-5}x + \frac{15}{-5}\\\\[/tex]

[tex]y = \frac{1}{5}x - 3[/tex]

so, slope = 1/5   ; (-5 , 7)

y -y1 = m(x -x1)

[tex]y - 7 = \frac{1}{5}(x- [-5])\\\\y - 7 =\frac{1}{5}(x + 5)\\\\y - 7 = \frac{1}{5}x+5*\frac{1}{5}\\\\y - 7 =\frac{1}{5}x+1\\\\y =\frac{1}{5}x+1+7\\\\y=\frac{1}{5}x + 8[/tex]

Answer:

40.2

Step-by-step explanation:

Side 1= x

Side 2= x+20

Side 3= x+40

Side 4= x+60

Side 5= x+80

Total perimeter= 401

x+x+20+x+40+x+60+x+80= 401

Simplify it...

5x=201

x= 40.2

This is the answer= 40.2

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Thanks!

The length of the shortest side of the pentagon would be:

40.2

Given that,

Every side of a pentagon is longer by 20 inches.

No. of sides in pentagon = 5

So,

Ist side of the pentagon [tex]= x[/tex]

IInd Side of the pentagon [tex]= x + 20[/tex]

IIIrd Side of the pentagon [tex]= x + 40[/tex]

IVth Side of the pentagon [tex]= x + 60[/tex]

Vth Side of the pentagon [tex]= x + 80[/tex]

We know that,

Perimeter = Sum of all the sides

Since the perimeter is 401 inches, the side can be determined through:

[tex]401 = x+x+20+x+40+x+60+x+80[/tex]

⇒ [tex]401 = 5x + 200[/tex]

⇒ [tex]401 - 200 = 5x[/tex]

⇒ [tex]201/5 = x[/tex]

∵ [tex]x = 40.2[/tex]

Thus, 40.2 is the correct answer.

Learn more about "perimeter" here:

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Answer: r= 0.972

Step-by-step explanation: