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

can yall plzz help me i feel supid

Answers

x = 12ft i would assume

If M, N, and O are midpoints of JKL, find LJ.

Answers

Answer:

the answer is 12

Step-by-step explanation:

edg 2021

The length of the side LJ of triangle ΔJKL can be obtained as 12 units. The correct option is (C).

What is a triangle?

A triangle is a two dimensional shape bound by three sides. The sum of the interior angles of a triangle is 180°. The longest side of a triangle is always less than the sum of other two sides.

As per the given question, O is the midpoint of LK.

Then, LO = OK.

The equation can be written as,

⇒ 2x = x + 8

⇒ x = 8

Then, NJ = 8 - 2 = 6

Since, N is also the midpoint of LJ.

LJ = 2 × NJ

⇒ LJ = 2 × 6 = 12.

Hence, the length of the side LJ can be found as 12 units.

To know more about triangle click on,

https://brainly.com/question/2773823

#SPJ2

this is RAY MAK who knows him ​

Answers

i don’t know him sorry

Which one of these is NOT equivalent to 2/3?
1. 11/23
2. 12/18
3. 14/21
4. 6/9

Answers

Number 1 is not equivalent to 2/3

At this pace, how many miles can she run in 88 minutes?

Answers

Answer:

What is her pace?

Step-by-step explanation:

Find her pace, then do 88/p to find how many miles she can run.

If her pace is 11 minute/mile, then she can run 8 miles.

8*11=88

Increase £490 by 11% give your answer rounded to 2 DP

Answers

Step-by-step explanation:

Given \:number (m) = £ 490Givennumber(m)=£490

Increase (g) = 11\%Increase(g)=11%

\begin{gathered} \red{ Required \:number } \\= m\Big( \frac{(100+g)}{100} \Big)\\= 490\Big(\frac{100+11}{100}\Big)\\= 490 \times \frac{111}{100} \\= 490 \times 1.11 \\= £ 543.9 \end{gathered}

Requirednumber

=m(

100

(100+g)

)

=490(

100

100+11

)

=490×

100

111

=490×1.11

=£543.9

Therefore.,

\red{ Required \:number }\green { = £ 543.9}Requirednumber=£543.9

•••♪

Answer:

£543.90

Step-by-step explanation:

You have to add 2 and nothing

Please helpppp will give brainliest

Answers

Answer: B it seems like

Answer:

A

Step-by-step explanation:

We can see that the y intercept is equal to 1

which means that we have the following equation

mx+1=y

We just need to solve for m at this point

We can use the ordered pair (-2,2) to help

We know that

-2m+1=2

Solve for m

-2m=1

m= -1/2

Put this together and we get

-1/2m+1=y which is A

Tyrese wants to buy baseball cards. They cost $5.00 per pack. There is a 25% discount before tax if 10 or more packs are purchased. Sales tax is 7%. If Tyrese buys 15 packs of cards, how much does he pay?

Answers

Answer:

72.225 $

Step-by-step explanation:

The price per pack: 5.00 $

When the amount of packs is > 10 :

90 % * 5 $ = 4.50 $ before tax.

The price of 15 packs:

4.50 $ * 15 = 45 + 22.5 = 67.5 $ before tax.

After tax:

107 % * 67.5 $  = 72.225 $ after tax.

Help me for brainliest ✅✅✅✅✅✅✅✅

Answers

Answer:

y=-2x-3

Step-by-step explanation:

can anyone tell me what 3 1/4 looks like as a decimal

Answers

Answer:

3.25

Step-by-step explanation:

Answer: 3.25

Step-by-Step-Explanation: I showed my work below and I hope that helps.

Derek tried to dilate the isosceles trapezoid ABDC with the center of dilation at the origin with a scale factor of 2. Check his work and complete the statements. The slope of AC is . The slope of EG is . The polygons are not dilations of each other because .

Answers

Answer: the slope of AC is 4

the slope of EG is 2

the polygons are not dilations of eachother because the corresponding sides are not parallel

Answer:

D, D, C

Step-by-step explanation:

Edwin has $50.00 in his bank. He starts spending $2.50 each week on snacks at lunch graph it

Answers

Answer: 50.00 - 2.50 each week

Answer:

Step-by-step explanation:

First label the x axis as "Time (Weeks)" and y axis as "money in the bank account". The x axis should go by 1. As in the squares being, 1,2,3, etc. The y axis should go by 5's and end at 50. Plant a dot at coordinates (0,50) and continue by subtracting $2.5 per week. So the next coordinates should be (1, 47.5). In the end, there should be $25 left in the account (after using all of the boxes).

At the beginning of a population study, city had 210,000 people. Each year since, the population has grown by 5.5%. Let t be the number of years since the start of the study. Let y  be the cities population. Write an exponential function showing the relationship between y and t. 

Y=

Answers

Answer:

y = 210,000(1.055)^t

Step-by-step explanation:

Initial population: p = 210,000

Annual growth rate: 5.5% = 0.055

Number of years: t

Population in year t: y

y = p(1 + r)^t

y = 210,000(1 + 0.055)^t

y = 210,000(1.055)^t

Mia averages 16 goals for every 80 shots on goal. Abby averages 13 goals for every 52 shots.. Who has the greater goal rate?

Answers

Abby, 13 is closer to 52, than 16 per 80

PLS HELP ME I SUCK AT MATH

Answers

I believe it’s 0.7 !

1) someone help easy math question

Answers

Answer is -9 it’s easy

2/5 in Fraction form?

Answers

Answer:

2/5 is fraction form.

0.4 is decimal form btw.

Use a product of two binomials to find a polynomial that represents the area of Roberto's plot.

Answers

Answer:

First, we know that the area of a rectangle of width W and length L is:

A = W*L

In the case of Roberto's plan, we can see that the length of the whole rectangle is:

L = 1.5ft + x + 1.5ft = 3 ft + x

And the width is:

W = 3ft + x + 3ft = 6ft + x

Then the area of the whole thing is:

A = (3ft + x)*(6ft + x)

This is what we wanted, a product of two polynomials that represents the area of Roberto's plot.

Now if we subtract the white square (is a square of sidelength x, then its area is A = x*x) we will get the area of the border;

The total area of Roberto's borders is:

Area of the border =  (3ft + x)*(6ft + x) - x*x

                               =   3ft*6ft + 3ft*x + x*6ft + x^2 - x^2

                               = x*9ft + 18ft^2

Can someone explain this to me

Answers

Answer:

54°

Step-by-step explanation:

The angles inside of a triangle will equal a sum of 180. So you use the equation X= 180-(80+46)

please brainliest

54 degrees




Hope I helped :)

anyone that's good at math please help <3

Answers

Answer:

i would try the first option,

Step-by-step explanation:

i'm not very good at math but i don't think the problem has exponents.

Answer correctly
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0+0

Answers

*cough cough* umm 74

please help mee!!! i will give u 5.0 starsss
Penny takes a taxi cab from the airport to her house. The distance is 4½ miles. The taxi costs $2.75 per mile. What is the cost of taking the taxi from the airport to her house? Round to the nearest cent.

Answers

Answer:

$12.38

Step-by-step explanation:

2.75 * 4.5 = 12.38

Answer:12.38

Step-by-step explanation:

Since the cost per mile is 2.75 even multiply that by the number of miles which would be 4.5 if you work that out it would get you 12.375 and you would round to 12.38 hope this helps.

The lines shown below are perpendicular. If the green line has a slope of
2/5 , what is the slope of the red line?

Answers

Answer:

-5/2

Step-by-step explanation:

for perpendicularity;

[tex]m1 = \frac{ - 1}{m2} [/tex]

where m1 is first slope

and m2 is second slope

so here, let m1 be green line slope

and m2 be red line slope

thus,

[tex]m2 = \frac{ - 1}{m1} [/tex]

[tex]m2 = \frac{ - 1}{ \frac{2}{5} } = - 1 \div \frac{2}{5} [/tex]

[tex] = - 1 \times \frac{5}{2} = \frac{ - 5}{2} [/tex]

Match each equation to a step that will help solve the equation.
Eqautions: Numbers:
1) Multiply each side by 5.
2) Multiply each side by -5.
3) Multiply each side by 1/5.
4) Multiply each side by -1/5.
A) 5x= 0.4
B) x/5=8
C) 3 = -x/5
D) 7 = -5x

Answers

1 and B
2 and C
3 and A
4 and D
A) 5x = 0.4 — 3) Multiple by 1/5

B) x/5 = 8 — 1) Multiple by 5

C) 3 = -x/5 — 2) Multiple by -5

D) 7 = -5x — 4) Multiple by -1/5


Explanation:

A:
5x = 0.4

5x • 1/5 = 0.4 • 1/5

x = 2/25 or 0.08


B:
x/5 = 8

x/5 • 5 = 8 • 5

x = 40


C:
3 = -x/5

3 • -5 = -x/5 • -5

-15 = x

x = -15


D:
7 = -5x

7 • -1/5 = -5x • -1/5

-7/5 = x

x = -7/5 or -1.4

Hope it helps!

Briley has 347 marbles. Joey has 4 times as many as Briley. Carson has 799 fewer than Joey. How many marbles does Carson have?

Can somebody help me thank you? Show work please

Answers

Answer:

697 marbles

Step-by-step explanation:

We know:

Briley- 374 marbles

Joey- 374*4

Carson- (374*4)-799

Solve:

374*4= 1496 (This is how many Joey has)

1496-799= 697 (This is how many Carson has)

Hope this helps!

how do I write a polynomial when given the zeros​

Answers

Given the zeros of a polynomial, you can very easily write it -- first in its factored form and then in the standard form. Subtract the first zero from x and enclose it in parentheses. This is the first factor. For example if a polynomial has a zero that is -1, the corresponding factor is x - (-1) = x + 1.

Answer:

Subtract the first zero from x and enclose it in parentheses. This is the first factor. For example if a polynomial has a zero that is -1, the corresponding factor is x - (-1) = x + 1.

Raise the factor to the power of the multiplicity. For instance, if the zero -1 in the example has a multiplicity of two, write the factor as (x +1)^2.

Repeat Steps 1 and 2 with the other zeros and add them as further factors. For instance, if the example polynomial has two more zeros, -2 and 3, both with multiplicity 1, two more factors -- (x +2) and (x -3) -- must be added to the polynomial. The final form of the polynomial is then ((x +1)^2)(x +2)(x -3).

Multiply out all the factors using the FOIL (First Outer Inner Last) method to get the polynomial in the standard form. In the example, first multiply (x + 2)(x - 3) to get x^2 + 2x - 3x - 6 = x^2 - x - 6. Then multiply this with another factor (x + 1) to get (x^2 - x - 6)(x + 1) = x^3 +x^2 - x^2 - x - 6x - 6 = x^3 - 7x - 6. Finally, multiply this with the last factor (x + 1) to get (x^3 - 7x - 6)(x + 1) =x^4+x^3-7x^2-7x-6x-6 = x^4 + x^3 - 7x^2 - 13x - 6. This is the standard form of the polynomial.

Geometry pls help me

Answers

Answer: 180

Step-by-step explanation:

When added together, Interior angles of a triangle are always equal to 180 degrees.

Answer:

∠FHG=120°

Step-by-step explanation:

first you calculate the angles of the triangle NGH

this is isoceles triangle, so there's 2 equal angles

and as shown, the 2 same angles are having 2 lines in each one, this 2 lines represents that the 2 angles are same

so both are 20°

any triangle has a sum of 180° of interior angles

so 180-(H+G)=the angle below N

180-(20+20)=140°

the angle below N is same as N because they're vertically opposite

140 is an exterior angle

and the exterior angle is equal to the 2 far angles

140=40+∠FHN

140-40=100°

so ∠FHN=100°

∠FHN+∠NHG=∠FHG

100+20=120°

so ∠FHG=120°

Question 3
Move the center of the circle vertically so it lies above and then below the x-axis. How does the equation of the circle change as the center crosses
the x-axis?

Answers

Answer:

The variable k changes as the focal point of the circle moves vertically.

Step-by-step explanation:

Answer:  The variable k changes as the center of the circle moves vertically. The sign of k is positive when the center is below the x-axis and negative when it is above the x-axis. The sign of the variable k flips when the center moves across the x-axis.

Step-by-step explanation: plato/edmentum answer!

hope this helps! :)

27 to 32
What is the frequency between 27 to 32

Answers

Answer:

it has a frequency of 5

Step-by-step explanation:

Which point is on the graph of the equation y=2x-5?


(3,-1)

(2,-1)

(4,2)

(2,-5)​

Answers

Answer:

(2,-1)

Step-by-step explanation:

If you plug each answer into the equation, (2,-1) is the only answer that makes the equation true. Hope this helps!

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