1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
melisa1 [442]
3 years ago
8

A recent Gallup poll asked 1006 Americans, "During the past year, about how many books, either hardcover or paperback, did you r

ead either all or part of the way through?" Results of the survey indicated that x = 13.4 books and s = 16.6 books. Construct a 99% confidence interval for the mean number of books Americans read either all or part of during the preceding year. Interpret that interval.
Mathematics
1 answer:
tekilochka [14]3 years ago
5 0

Answer:

The required interval is [12.0519,14.7481]

Step-by-step explanation:

Consider the provided information.

It is given that:

n = 1006, mean = 13.4 and s = 16.6  

We need to construct a 99% confidence interval.

That means α = 0.01 and α/2 = 0.005

Z_{\alpha/2}=2.5758

First find the standard error as shown:

SE=\frac{16.6}{\sqrt{1006}} =0.5234

Now to calculate confidence interval calculate: Mean \pm Z_{\alpha/2} \times SE

=13.4 \pm 2.5758 \times 0.5234

=13.4 \pm 1.34817372

[12.0519,14.7481]

Hence, the required interval is [12.0519,14.7481]

You might be interested in
Find the greatest common factor of the following monomials.<br> 25x^5 20x^6
klio [65]
1x25=25
5x5=25

1x20=20
2x10=20
4x5=20

x^5 is the biggest you can take out of x^5 and x^6 and 5 is the biggest number you can take out of 20 and 25

5m^5
8 0
2 years ago
Tyler has two savings accounts that his grandparents opened for him. One of accounts pay 7 % annual interest, whereas the other
Dafna11 [192]

Answer:

$400 and $1,000

Step-by-step explanation:

Let us assume the x be the amount invested in 7% account

And, 600 + x be the amount invested in 9% account

Now the equation is

7x% + 9%(600 + x) = $118

0.07x + 54 + 0.09x = $118

0.16x = $118 -$54

0.16x = $64

x = $400

And, the other one is = $400 + $600 = $1,000

5 0
2 years ago
How would I solve y-8+3(y+4)
konstantin123 [22]

Answer:

y-8+3y+12

4y+4

Step-by-step explanation:

y-8+3y+12

4y+4 is your answer

6 0
3 years ago
Help pls, thank you !!
nikdorinn [45]

Answer:

the first one is a lie

Step-by-step explanation:

caf is more 45 degrees than 25

7 0
2 years ago
What is the answer to this question Copy: Which one has two zero and two four ? A) 0024 B) 2024 C) 0044
svetlana [45]
The answer to the question is C) 0044
5 0
3 years ago
Read 2 more answers
Other questions:
  • How many distinct triangles can be formed for which mZE = 64,9 = 9, and e = 10?
    5·1 answer
  • Y=-3x 2.5 is it linear
    15·2 answers
  • Kylie and Rhoda are solving the equation 4(x-8)=7(x-4). Kylie uses a first step that results in 4x-32=7x-28. Rhoda uses a first
    5·1 answer
  • What is the domain of the function in this table?
    12·1 answer
  • 43 tens times 3 tens equal how many hundreds
    5·2 answers
  • Is it A or C<br> And I need a explanation <br> Please <br> I already found slope ,
    14·1 answer
  • Solve for x please and thank uou
    10·2 answers
  • Which expression best represents the phrase"7 less than the quotient of 2x and 5"
    12·1 answer
  • HELP PLEASE <br> Find the length of AB
    7·1 answer
  • The values of a,b, and c in scientific notation are 3.47 x 10^-6, 4.61 x 10^-7, and 5.52 x 10^-7, respectively. Complete the fol
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!