Mathematics College

The standard deviation of SAT scores for students at a particular Ivy League college is 250 points. Two statistics students, Raina and Luke, want to estimate the average SAT score of students at this college as part of a class project. They want their margin of error to be no more than 26 points.
(a) Raina wants to use a 90% condence interval. How large a sample should she collect?
(b) Luke wants to use a 99% condence interval. Without calculating the actual sample size, determine whether his sample should be larger or smaller than Raina's, and explain your reasoning.
(1) smaller since Luke has a higher level of confidence in his results than Raina
(2) smaller because higher degrees of confidence require smaller margins of error
(3) larger higher degrees of confidence require larger margins of error
(c) Calculate the minimum required sample size for Luke.

Answers

Answer 1

Answer:

A

Step-by-step explanation:

Answer 2
59473737388338338383839393

Related Questions

Here is the next one jaded :))

Answers

Answer:

x = 5.56

Step-by-step explanation:

Sin(17) = [tex]\frac{x}{19}[/tex]

=> Isolate the "x"

Sin(17) * 19 = x

5.56 = x

Hope this helps!

What is the slope of the following graph?

Answers

I believe the slope is -2/3

Mr. Wu rides his bike at 6 mph to the bus station. He then rides the bus to work, averaging 30 mph.

If he spends 20 minutes less time on bus than on the bike, and the
distance from his house to work is 26 miles, what is the distance from
his house to bus station?

Fill out the information in the table for your convenience. Write the
equation. Solve. Show your work. Check your work

Answers

Answer:

26 mi

Step-by-step explanation:

Convert 20 min to hrs: 20/60 = 1/3 hr

:

Let t = time on the bike

then

t-(1/3) = time on the bus

:

Write a dist equation Dist = speed * time:

:

Bike dist + bus dist = 26 mi

 

6t + 30[t-(1/3)] = 26

:

6t + 30t - 10 = 26

36t = 26 + 10

36t = 36

t = 1 hr on the bike

:

6 mph for 1 h = 6 mi from house to the bus station

:

:

Check solution by finding the distance

6(1) + 30(2/3) =

6 + 20 = 26 mi

compute the value of the discriminant and give the number of real solutions of the quadratic equation​​

Answers

mag aral ng mabuti para may alm

Step-by-step explanation:

yan ang answer

Math each value on the left with the number on the right that includes that value.

Answers

B is the right answer

Answer:

Answer given below

Step-by-step explanation:

5 thousands - 45,809

8 hundreds - 958,823

3 millions - 3,072,700

2 ten thousands - 7,426,580

7 hundred thousands - 752,671

somone pls help me

Answers

Answer:

14800 sq yd

Step-by-step explanation:

145+225=370

370÷2=185

185x80=14,800

simplify 0.6 kg : 3/4 kg : 400 g​

Answers

Answer:

0.6 kg x .4 kg /.75 = 0.32 kg

Calculate the amount of interest on $4,000.00 for 1 year, compounding daily at 4.5 % APR. From the Monthly Interest Table use $1.046025 in interest for each $1.00 invested.

Answers

Answer:

Sierra Madre Oceandental range

Evaluate the following, using the distributive property. (i) – 39 × 99

(ii) (– 85) × 43 + 43 × ( – 15)

(iii) 53 × ( – 9) – ( – 109) × 53

(iv) 68 × (–17) + ( –68) × 3

(v) 26 x (-48) + (-48) x 36

(vi) (-41) x 102

(vii)(-57) x (-19) + 5

Answers

Answer:

(i) - 33 × 99

= - 3267

(iii) 53 × ( - 9) - ( - 109) × 53

= - 477 + 109 × 53

= - 477 + 5777

= + 5300

(ii) (-85) × 43 + 43 × ( - 15)

= - 3655 + 43 - 645

= - 3655 - 645 + 43

= - 4300 + 43

= - 4257

1. AIDS is caused by a virus called HIV. True or false

Answers

Answer:

[tex]\huge\boxed{True\hookleftarrow}[/tex]

⎆ AIDS (Acquired Immunodeficiency Syndrome) is caused by a virus named HIV (Human Immunodeficiency Virus). This disease can be transmitted through :-1) sexual contact2) transfer of blood etc.

Which number line correctly shows the location of -1 1/2?

Answers

Hopes this helps:

Answer: A.

what would be the value of x please help

Answers

9514 1404 393

Answer:

  x = 7

Step-by-step explanation:

The segment marked 6x is the midline of the triangle, so is half the length of the base.

  6x = 1/2(84)

  x = 42/6 = 7

The value of x is 7.

help!! very easy math! please answer correctly. <3

Answers

Answer:

y=1x+(-8)

Step-by-step explanation:

Translate the word phrase into a math expression.
15 fewer than the product of 4 and a number.

ples look at pic to know the options :)

Answers

Answer:

15 - 4x

Hope this helps :)

Write 0.0000000000048 as a multiple of a power of 10.

Answers

Answer:

Step-by-step explanation:

6.492506e-114

Answer:

4.8 x 10^-12

hope this helps

have a good day :)

Step-by-step explanation:

Why is 5992 divisible by 6​

Answers

Answer:

Because its 9987 * 6

Step-by-step explanation:

Well, you could use simple math.

6:

1,6

2,3

I'm sorry if this is what you weren't looking for.

I need help with this question​

Answers

I know the answer but first I need you to answer my math question

WILL







GIVE

N N N N N


BRAINLIST

Answers

Answer:

31338is the correct answer

Answer:

THE LAST ONE

Step-by-step explanation:

13,158-18,180=5022

Subtract BECAUSE WE NEED THE DiEFFRENT

The two pyramids below are similar. What is the length of the altitude of the
smaller pyramid?

Answers

Answer:

B is the correct answer........

Answer: D

Step by step solution:
5/2=x/3
3*5/2=x
15/2=x

So the answer is D

Order each expression from smallest (top) to largest (bottom).
|-10
|--2
III
15
10
III III
2

Answers

the answer goes in this order
-10
-2
1
|-2|
|-10|
15

Plz help this is due today NO LINKS OR GROSS PICTURES OR I Will REPORT And please show work

Answers

This is a scalene triangle. There are 3 sides, and each side length is different, according to the diagram. This means it's a scalene triangle. Hope this helped!

which of the following statements are true choose sll that apply Point a and point c share the same y coordinates

Answers

Answer:

c i think

Step-by-step explanation:

i do not know it is just a brain wave

Determine the Surface area of the box (Show work)

Answers

Answer:

Step-by-step explanation:

Ok. If this is surface area we will have to multiply all the areas together. So, 12 x 8 x 2 = 192. Your answer will be 192.

Amelia has a 1-6 number cube (dice). She rolls the cube twice. What is the probability that she rolls two even
numbers in a row?

Answers

Answer:

6/9

Step-by-step explanation:

2/6 x 2 = 0.6... and the 6 keeps repeating. There is one repeating number, so your answer is 6/9.

Could i get some help with this problem. 7(x-3)=49

Answers

7x-21=49, 49-21= 28/7= x= 4

Answer:

x = 10

Step-by-step explanation:

- The first thing to do is open parentheses:

7 (x - 3) = 49

7x - 21 = 49

- Then add 21 to each side:

7x - 21 = 49

7x = 70

- Now divide each side by 7:

7x = 70

x = 10

Which number line shows one way to find the value of 2 - 6?

Answers

B is the answer. All the other ones don’t work, and I promise you it’s the answer. Good luck!
B because all the other answer don’t add up at all lol

PLEASE HELP
PLEASEEEEEE

Answers

7g 3b 7grade jzjdishsgsudhfhxhxhx

5.6 by the power of negative 5 can someone tell me what that equals

PLZ HELP NOW

Answers

0.00018157659
hope this helps you

Answer:

0.0001815766

Step-by-step explanation:

The definition of negative exponent is  [tex]a^{-n}=\frac{1}{a^n}[/tex].  For 5.6 to the negative 5 power, write the reciprocal of 5.6 to the 5th.

[tex]5.6^{-5}=\frac{1}{5.6^5}[/tex]

A calculator can do the rest.  It can also find the decimal value directly.

Problem ID: PRAFJA9
Look at this graph.

What is the slope of line k?
(I will give you the brainiest thing )(please answer quick)

Answers

Answer:

10/4

Step-by-step explanation:

The answer is 5/2 the rise is 5 the run is 2

Is (–5, 2) a solution to the equation y = x?

Answers

No because -5 does not
Equal 2
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