Suppose the true proportion of high school students who walk to school in New York City is 0.82. If many random samples of 400 high school students are taken, by how much would their sample proportions typically vary from the true proportion?
a. 0
b. 0.001
c. 0.019
d. 0.148
e. 7.684

Answers

Answer 1

Answer:

i think it will be C

Step-by-step explanation:

with the variability formula = squareroot p(1-p)/n which gives you 0.0192


Related Questions


James paid an initial fee of $6.00 for a movie rental service. Each time he rents a movie he is charged $2.00. Sarah uses a different movie
rental service that charges based on the equation y = 3x + 4, where y is the total cost and x is the number of movies rented. At what point
are the prices of the two services the same?
606

Answers

Answer:

We have system of equations

James's total cost: Y = 2x + 6 (1)

Sarah's total cost: Y = 3x + 4 (2)

replace y = 2x + 6 and (2) => 2x + 6 = 3x + 4 => x = 2 => y = 10

So the total cost of renting movies by James And Sarah is equal

Step-by-step explanation:

In the figure, name the intersection of lines m and n.
B
m
H
K
j
DC
B
K
A

Answers

b and dc are the right answers

if you can please answer the first and other question bc i dont know if im right lol

Answers

Answer:

DB!

Step-by-step explanation:

Question 1: A rectangle's area is length x width. You add up all the portions for the full area.

Question 2: A rectangle's area is length x width. a is the width and the length is 2+3+4, so the area is a(2+3+4)

Hope I helped!

need the answer asap pls​

Answers

Answer:

C. {-9,-3}

Step-by-step explanation:

[tex]|k+6|=3[/tex] gives [tex]k+6=3[/tex] if [tex]k + 6 \geq 0[/tex]. This gives [tex]k=-3[/tex], which is valid.

It can also give [tex]-(k+6) = 3[/tex] if [tex]k + 6 < 0[/tex]. This gives [tex]k=-9[/tex], which is valid.

Hence the solutions are [tex]k=-9 \vee k=-3[/tex].

A rectangular poster is 2/3 meter long and 1/2 meter wide. What is the area of the poster in fraction form

Answers

Answer:

1/3

Step-by-step explanation:

Find the slope between the points (2,9) and (3,1) *
Please I need help immediately

Answers

Answer:

1

Step-by-step explanation:

Distance between x's (Δx)

0

This field is calculated automatically, you cannot change it's value manually.

Distance between y's (Δy)

1

d = √(Δy2 + Δx2) = √(12 + 02) = √1 = 1

DO ALL FOR A BRAINLIST AND A THANKS <333 pls help

Answers

Answer:

1. 11/12

2. 1/2

3. 2/3

4. 3/4

5. 1

6. 4/5

7. 9/10

8. 3/5

Step-by-step explanation:

1. 11/12

2. 5/10= 1/2

3. 4/6=2/3

4. 6/8=3/4

5. 3/3=1

6. 4/5

7. 9/10

8. 3/5

Answer:

1. 11/12

2. 3/3

3. 1/2

4. 4/5

5. 2/3

6. 9/10

7. 3/4

8. 3/5

Step-by-step explanation:

since the denominators are the same, you just add the top numbers together. in order to simplify, you find the greatest common factor for both the top and the bottom number.

16. In order to get a thicker sauce, a restaurant owner combines a sauce that
is 70% tomato paste with the original sauce, which is 40% tomato paste.
How much of each should be used to make 5 L of the new 60% tomato
paste sauce?

Answers

Jshlatt said she had to take her to mommy and she was crying so she didn’t get candy for her

Is this a function?

Answers

i think it is!

there are no points that are in the same x unit!

hope this help! :(

Mitch puts $500.00 into an account to use for school expenses. The account earns 12% interest,
compounded annually. How much will be in the account after 8 years? Round your answer to
the nearest cent.

pls hurry it’s for a math test

Answers

Answer:

there will be 20 dollars

Step-by-step explanation:

500 multiplied by .12 and then timesed by 8 then subtracted by 500

Cameron is 5 ft tall and casts a 12 ft shadow. At the same time of day, a nearby
building casts a 78 ft shadow. How tall is the building? Hint: Make a sketch and label all
measurements first.

Answers

Answer:

the building would be 32.5 feet tall.

Step-by-step explanation:

hey can someone help:)?​

Answers

I think it’s the first one

help Find value of ST, Geometry problem

Answers

13 because the scale factor is 1/3

Answer:

It would be 13.

Step-by-step explanation:

3.5x+2.5y=321
Pleeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeease help

Answers

Answer:

3.5x=-6y636477374747 88

Both answers please. Thank you

Answers

1.25hrs and 2.9hrs
Hope it helps
When you ask what 75 minutes is in decimal, we assume you want to know what 75 minutes is in terms of hours.

There are 60 minutes in an hour. Therefore, 75 minutes in decimal is 75 minutes divided by 60 minutes (75 / 60), which equals 1.25. Thus, the answer to "What is 75 minutes in decimal?" is as follows:

75 minutes = 1.25 hours


When you ask what 174 minutes is in decimal, we assume you want to know what 174 minutes is in terms of hours.

There are 60 minutes in an hour. Therefore, 174 minutes in decimal is 174 minutes divided by 60 minutes (174 / 60), which equals 2.9. Thus, the answer to "What is 174 minutes in decimal?" is as follows:

174 minutes = 2.9 hours


Hope it helps!! Have a great day❤️✨

100 POINTS AND BRAINLIEST

What is the rule for the function that is graphed?

y = 2 x + 2
y = 3 x + 2
y = 2 x
y = x – 2

Answers

Answer:

Y=2x+2

and tbh it's simple for most people

Step-by-step explanation:

Hope it helps

Answer:

y = 2 x + 2

Step-by-step explanation:

I did the assignment, so I hope it helps (A like helps me if you have time)

Vhich of the equations below represents a line parallel to the x-axis?
A. y = 3
B. y = X
C. y = 1/x
D. x = 3

Answers

I think it’s B, y=X. Hope it works
The answer is A. y=3

PLEEEEEEEEEEZ HELP ME!!!.
A company has to buy computers and printers. Each computer, x, costs $525 and each printer, y, costs $315. If the company spends $7,770 and buys a total of 20 machines, how many of each did it buy?
Enter a system of equations to represent the situation, then solve the system.
The system of equations is ___ and ___ .
The company bought ___ computers and ___ printers.
pleas help I'm failing math and this quiz is due tomorrow

Answers

Answer:

The company bought 7computers and 13 Printers.

Step-by-step explanation:

Just plug in the numbers so you know I'm right. I don't know how to explain it just do it. Sorry

Given f(x) = 2 sin x, find the exact value of f (7pi/6) in simplest form with a rational denominator.​

Answers

Answer:

           [tex]\bold{f(\frac{7\pi}6)=-1}[/tex]

Step-by-step explanation:

[tex]f(\frac{7\pi}6)=2\sin(\frac{7\pi}6)=2\sin(\frac{7\pi}6)=2\sin(\pi+\frac{\pi}6)=-2\sin(\frac{\pi}6)=-2\cdot\frac12=-1[/tex]

A third line goes through the same point. How would that show up in a table representing the relationship for the third line?

Answers

Answer:

Most likely the table will contain one pair of values that correspond to the coordinate where the previous lines intersect.

Step-by-step explanation:

It may be possible that the table before the third line contains values on either side of the point of intersection, but the slope will produce a line that connects those values and passes through the previous intersection.

Imagine making slices through the solid parallel to the bases. What two-dimensional shapes are formed

Answers

Answer:

shape as that of the base of the solid

Step-by-step explanation:

A solid has a three dimensional shape. A three dimensional shape has both length, breadth and height. If the solid is being cut parallel to the base, a two dimensional shape (has length and width) is formed.

The shape of the two dimensional shape is the same as the shape of the base. Hence if solid is cut parallel to the bases, the shape formed would have the same shape as that of the solid base.

-3x-y=9
y=-3x+9
(select the correct answer for the solution to the following system of equations)
A: (1,6)
B: (0,-9)
C: infinite solutions
D: no solution

Answers

Answer:

D: no solution

...because none of the answers work for both of the equations when you plug in the x and y values

Explain the steps of graphing 2x + 4≤ 12.

Answers

Answer:

Step-by-step explanation:

First, you want to simplify so the equation would be x+2≤6 or x≤4

Because you are solving for x you want to graph a vertical line on 4.

Then you shade on the left side of the line because it is less than or equal to. If it were just less then you would do a dashed line on 4 but because it is also equal to 4 then you keep it a solid line.

I recommend using Desmos graphing calculator.

what is the difference of 3 1/4 and 15/16.

Answers

It is the fact that I don’t know so sorry that u don’t know it either

Answer:

I hope it helps

System of equations!!!

Answers

Answer:

Step-by-step explanation:

1. x^2-x-20=3x-15

x=5, x=1 substitute

y=3*5-15 = 0

y=3*(-1)-15 = -18

Solution: (5,0) & (-1,-18)

2. x^2+2x+3=x+5

x=-2, x=1 substitute

y= -2+5 = 3

y=1+5 = 6

Solution: (-2,3) & (1,6)

Which graph represents the function?

f(x)=1x+1−2

IS MY ANSWER CORRECT???

Answers

Answer:yes

Step-by-step explanation:

Answer:

yes it is

Step-by-step explanation:

19% of £394.22. Give your answer rounded to 2 DP.
Someone please quickly respond back! Thanks.

Answers

Answer:

3

Step-by-step explanation:

if you round it by the nearest 2 you get 3

I NEED MEGA HELP WITH THIS QUESTION

Answers

Answer:

C. [tex]y = - \frac{1}{4} x - 2[/tex]

Step-by-step explanation:

To find slope using coordinates, use the formula above.

[tex](4, - 3) \: (0, - 2)→ \frac{ - 2 - ( - 3)}{0 - 4}→ \frac{ - 2 + 3}{ - 4} → - \frac{1}{4} [/tex]

Now, using the [tex]y = mx + b[/tex] formula, plug in [tex] - \frac{1}{4} [/tex] as [tex]m[/tex] (slope) and either coordinate as the [tex]x[/tex] and [tex]y[/tex] values. It looks like this:

[tex] - 3 = - \frac{1}{4}(4) + b[/tex]

To solve for [tex]b[/tex], continue to use PEMDAS.

[tex] - 3 = - \frac{1}{4}(4) + b→ - 3 = - 1 + b→ - 2 = b[/tex]

Now use [tex]m[/tex] and [tex]b[/tex] to solve for your equation:

[tex]y = - \frac{1}{4} x - 2[/tex]

The answer is C.

Marie purchased a $49.00 gift for a baby shower. She uses a coupon that offer 20% off. how much will Marie SAVE on the gift card after the coupon

Answers

Answer:         $39.2

Step-by-step explanation:

9.80 saved

Step-by-step explanation:

49.00 x .20 = 9.80

I’m actually confused.

Answers

M^2 + n^2

Step 1:
Substitute in the numbers
-5^2 + 3^2

Step 2:
Square both numbers
25 + 9

Step 3:
Add them together

Answer is 34
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