Mathematics High School

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:0.019 i think

Step-by-step explanation:

you would use the variability formula which is the squareroot p(1-p)/n

Related Questions

(c) Paul uses the function y = 7x + 30 to model the situation. What score does Paul’s model predict for 3 hours of homework?

(d) Describe what the number 30 in Part (c) mean in the context of the situation?

Answers

Answer:

(c) Paul's model predicts a score of 51 for 3 hours

(d) 30 represents the y intercept

Step-by-step explanation:

Given

[tex]y = 7x + 30[/tex]

Solving (c): What is y when x is 3

Substitute 3 for x in [tex]y = 7x + 30[/tex]

[tex]y = 7*3 + 30[/tex]

[tex]y = 21 + 30[/tex]

[tex]y = 51[/tex]

Solving (d): What does 30 represent

An equation is represented as:

[tex]y = mx + b[/tex]

Where

[tex]b = y\ intercept[/tex]

Compare: [tex]y = mx + b[/tex] to [tex]y = 7x + 30[/tex]

[tex]b = 30[/tex]

This implies that 30 represents the y intercept

(7х3 – 8х2 - 13х + 2) - (7x - 1)

Answers

Answer:

The answer is 7x^3 - 8x^2 - 20x + 3

Step-by-step explanation:

Simplify the expression.

Hoped this helped!

This is the graph of f(x). What is the value of f(2)?
101
-5
O A. 2
B. 6
C. 5
D. 9

Answers

Answer:

9

Step-by-step explanation:

We have been given a graph of a function and we are asked to find the value of our function at x equals 2.

To find the value of f(2), we will see what is the value of y when x is 2.

We can see from our given graph that at x equals 2 our function is at 9.


NOTE: Angles not necessarily drawn to scale.

PLEASE HELP I WILL MARK BRAINLIST

Answers

x=47

angles are supplementary so they add to 180.

180-133=47

Answer:

47

Step-by-step explanation:

133+133=266

360-266=94

94/2=47

I think hopefully!

Help me, correct answers appreciated ​

Answers

Answer:

No

Step-by-step explanation:

-6 is X

-10 is Y

-10 is smaller than - 8

Answer is -6
-10 is smaller than -8
-6 is greater than -8
So therefore -6 is the answer

Hi can someone help me on this please? I am having trouble understanding this one :) thx

Answers

Answer:

I would say its the bottom one

Step-by-step explanation:

The top one goes to five while the bottom only goes to four, plus you cant have a negative amount of people you can only have from 0 to infinity amount of people.

Answer:

It's the second line

Because people can only be counted from zero.

4p-2/4*2p+5/2*2/3
PLEASE SHOW THE WORKING
I WILL THANK WHOEVER ANSWERS ME AND MARK AS BRAINLIEST

Answers

Combining like terms is key in this expression.


4p - 2/4 • 2p + 5/2 • 2/3

Change denominators to be the same.

(2/4)(3) = 6/12
(5/2)(6) = 30/12
(2/3)(4) = 8/12

Now combine these three fractions.


-6/12 + 30/12 • 8/12

24/12 • 8/12

Reduce these two for easier work.

2/1 • 2/3 = 4/3


Combine the terms with p variables.

4p • 2p = 8p^2


Final answer is;

8p^2 + 4/3

Write and simplify an expression to represent the perimeter of the triangle shown. Then find the value of x if the perimeter is 45 feet.

Please help me out i just need to know what x=​

Answers

Answer:

7

Step-by-step explanation:

x +4+2x+1+3x-2 = perimeter of triangle.

(6x +3)ft = perimeter

given perimeter = 45feet

hence,

6x + 3 = 45

6x = 42

x = 7

Hope it helped!! plz mark brainliest!! have a good day !! :)

Solve for q.
7(q + 7) = 5q + 59

Answers

Answer:

5.

Step-by-step explanation:

7(q + 7) = 5q + 59

7q + 49 = 5q + 59

7q - 5q = 59 - 49

2q = 10

q = 5.

whats bigger 6/10 or 13/21

Answers

Answer: 13/21

Step-by-step explanation:

can i get brainiest pls

Find the height of a cone with a diameter of 12 m and whose volume is 133 m.

A. 2 m
B. 9 m
C. 3 m
D. 1 m

Answers

Answer:

D

Step-by-step explanation:

Here, we want to get the height of the cone

radius = diameter/2

r = 12/2 = 6 m

To get this, we use the formula for the volume

V = 1/3 * pi * r^2 * h

133 = 1/3 * 3.142 * 22/7 *6^2 * h

h = 1.12 m

x3 +y3 when x=3 and y=4

Answers

Here’s the answer for your question hope this helps!

Find the unit rate. Round to the nearest hundredth, if necessary.
$3.99 for 17 lb
The unit rate is

Answers

3.99 divided by 17 = .23 cents per lb

Which steps would you use to solve this equation? Check all that apply. p+ 7 = 12 Subtract 7 from both sides of the equation. O Subtract 7 from 7. 07-7 = 0 and 12-7 = 5, so p = 5. Substitute 12 for p to check the solution. O Substitute 5 for p to check the solution.​

Answers

Answer: 1,3,5 are correct

Step-by-step explanation:

I got it right on Edge

HELP please!!! ill give brainliest :)

Answers

I’m pretty sure the correct answer is B

Solve each inequality -6b + 2 < 56

Answers

Answer:

b > - 9

Step-by-step explanation:

i hope i did okay i try my best

Can you read this????????? i can

Answers

Answer:

Yesh I can!!

Step-by-step explanation:

But why does it want us to forward it when we can just read it? Nvm

Just have a good day!!!

Answer:

This message serves to prove how our mind can do amazing things in the beggining it was hard but your mind is reading it automatically without even thinking about it, Be proud ! only certain people  can read this . PLease forward it you can read this.

Step-by-step explanation:

This is the answer. ;-) I think is easy to read it.

Solve the following inequality algebraically. |x - 2| > 11​

Answers

Answer:

SO HARD I CANT DO IT.

IM STILL 10 SORRY :(

Classifying a Triangle
On the packaging for a triangular sail, the edge measurements for the sail are listed as
7 ft x 15 ft x 17 ft. Without unfurling the sail, you want to determine if the sail forms a right triangle, an acute triangle, or
an obtuse triangle.
Using the tools from this lesson, you determine that the general shape of the sail is a(n)
triangle.
x

Answers

It would be obtuse because the total of the added is 1,785

Tally question.
Quite easy.
Pls help :)

Answers

Answer:

39/73

Step-by-step explanation:

If PQ = QR, find x. NEED HELP.

Answers

Answer:

x=-3,5

Step-by-step explanation:

At the country fair, Maya observes that the wheel of chance has 25 numbered slots. If each play costs a quarter, how much will Maya likely have to spend before she gets her winning number?

Answers

Answer:

6 1/4

Step-by-step explanation:

Given

Total number of wheel chance = 25

Each play = 1 quarter

1 play = 1/4

To calculate the amount Maya has to spend to get her winning number, we will say;

25 plays = x

Divide both expressions

1/25 = 1/4÷x

1/25 = 1/4x

Cross multiply

4x = 25

x = 25/4

x = 6 1/4

This mean that Maya will have to spend 6 1/4 before she gets her winning number

Find the product.
10(-7)

Answers

Answer:

-70

Step-by-step explanation:

If a number is right by a parathesis () then you multiply the number inside the parathesis by the number next to them.

-70 (multiply what’s in the parenthesis and since there’s only one negative number in your problem it’s negative

Simplify. 98 to the root of 3/14. ​

Answers

Answer:

2.12132034

STEP BY STEP EXPLANATION:

3/14 . √ 98        

Rewrite  98  as  7 2  ⋅ 2 .

3/14 . √ 7 2 . 2

3/14 . (7√ 2)

3/2 . √ 2

3√ 2/2

fraction form

3√ 2/2

decimal form

2.12132034

Which expressions have exactly two factors? Choose ALL that apply.

Please Help

Answers

Answer: xy and 3(b - 1 )

Step-by-step explanation:

Answer:

Step-by-step explanation:

this expression is xy and 3(b-1)

list two attributes of two congruent polygons

Answers

Answer:

This entry deals with the congruence of polygons in general. Congruent triangles are discussed in more depth in Congruent Triangles. Polygons are congruent if they are equal in all respects: 1. Same number of sides 2. All corresponding sides are the same length

Step-by-step explanation:

Step-by-step explanation:

1)Same number of sides.

2)All corresponding sides are the same length,

Every two years, there is a local election in a small town. In 2015, a total of 29,000 voters turned out in the election. In 2017, the number of voters decreased by 16%. In 2019, the number of voters increased by 22%. How many voters turned out in the election for 2019?

Answers

Answer:

29719.2

Step-by-step explanation:

whats 76x34 div 4^2?

Answers

Answer:

1241/8 x

Step-by-step explanation:

73x(34)/42

Answer: 161 1/2

Step-by-step explanation: 76*34= 2584 and 4^2=16

so the question is basically 2584 divided by 16. 2584/16=

Fraction: 161 1/2. Decimal: 161.5

The "h" in the lateral area formula, L = Ph, stands for

Answers

P= perimeter of the base P=(2 x L) + (2 x w) h= height. Total Surface area: S= Ph + 2B.

Simplify the polynomials. Write your answer in standard form.
(x-4) (5x^2 + 3x-2)

Answers

Answer:

-2+4x+5x^2

Step-by-step explanation:

add together what can be added together

x and 3x

-4 and -2

and 5x^2 all by itself

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