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Click the icon to view a partial table of critical values. (a) How many subjects are needed to estimate the mean number of books read the previous year within six books with 90% confidence? This 90% confidence level requires subjects. (Round up to the nearest subject) (b) How many subjects are needed to estimate the mean number of books read the previous year within three books with 90% confidence? This 90% confidence level requires subjects. (Round up to the nearest subject.) (c) What effect does doubling the required accuracy have on the sample size? O A. Doubling the required accuracy nearly quarters the sample size. O B. Doubling the required accuracy nearly doubles the sample size. OC. Doubling the required accuracy nearly quadruples the sample size. OD. Doubling the required accuracy nearly halves the sample size. (d) How many subjects are needed to estimate the mean number of books read the previous year within six books with 99% confidence? This 99% confidence level requires subjects. (Round up to the nearest subject.) Compare this result to part (a) How does increasing the level of confidence in the estimate affect sample size? Why is this reasonable?

Click the icon to view a partial table of critical values. (a) How many subjects are needed to estimate the mean number of books read the previous year within six books with 90% confidence? This 90% confidence level requires subjects. (Round up to the nearest subject) (b) How many subjects are needed to estimate the mean number of books read the previous year within three books with 90% confidence? This 90% confidence level requires subjects. (Round up to the nearest subject.) (c) What effect does doubling the required accuracy have on the sample size? O A. Doubling the required accuracy nearly quarters the sample size. O B. Doubling the required accuracy nearly doubles the sample size. OC. Doubling the required accuracy nearly quadruples the sample size. OD. Doubling the required accuracy nearly halves the sample size. (d) How many subjects are needed to estimate the mean number of books read the previous year within six books with 99% confidence? This 99% confidence level requires subjects. (Round up to the nearest subject.) Compare this result to part (a) How does increasing the level of confidence in the estimate affect sample size? Why is this reasonable?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 11PPS
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People were polled on how many books they read the previous year. Initial survey results indicate that s = 13.4 books. Complete parts (a) through (d) below.
People were polled on how many books they read the previous year. Initial survey results indicate that s = 13.4 books. Complete parts (a) through (d) below. Click the icon to view a partial table of critical values. (a) How many subjects are needed to estimate the mean number of books read the previous year within six books with 90% confidence? This 90% confidence level requires subjects. (Round up to the nearest subject) (b) How many subjects are needed to estimate the mean number of books read the previous year within three books with 90% confidence? This 90% confidence level requires subjects. (Round up to the nearest subject.) (c) What effect does doubling the required accuracy have on the sample size? O A. Doubling the required accuracy nearly quarters the sample size. O B. Doubling the required accuracy nearly doubles the sample size. OC. Doubling the required accuracy nearly quadruples the sample size. O D. Doubling the required accuracy nearly halves the sample size. (d) How many subjects are needed to estimate the mean number of books read the previous year within six books with 99% confidence? This 99% confidence level requires subjects. (Round up to the nearest subject.) Compare this result to part (a). How does increasing the level of confidence in the estimate affect sample size? Why is this reasonable? O in 33 H 41°F Clear
Transcribed Image Text:People were polled on how many books they read the previous year. Initial survey results indicate that s = 13.4 books. Complete parts (a) through (d) below. Click the icon to view a partial table of critical values. (a) How many subjects are needed to estimate the mean number of books read the previous year within six books with 90% confidence? This 90% confidence level requires subjects. (Round up to the nearest subject) (b) How many subjects are needed to estimate the mean number of books read the previous year within three books with 90% confidence? This 90% confidence level requires subjects. (Round up to the nearest subject.) (c) What effect does doubling the required accuracy have on the sample size? O A. Doubling the required accuracy nearly quarters the sample size. O B. Doubling the required accuracy nearly doubles the sample size. OC. Doubling the required accuracy nearly quadruples the sample size. O D. Doubling the required accuracy nearly halves the sample size. (d) How many subjects are needed to estimate the mean number of books read the previous year within six books with 99% confidence? This 99% confidence level requires subjects. (Round up to the nearest subject.) Compare this result to part (a). How does increasing the level of confidence in the estimate affect sample size? Why is this reasonable? O in 33 H 41°F Clear
Dolled on how many books they read the previous year. Initial survey results indicate that s = 13.4 books. Complet icon to view a partial table of critical values. S fic S fi ct n n n n Partial Critical Value Table Level of Confidence, (1-x) 100% i 90% 95% 99% Area in Each Tail, 33 Print 0.05 0.025 0.005 α 2 Done 8 Critical Value, Zα/2 1.645 1.96 2.575 - 90% con idence level requires subjects. (Round up to the nearest subject.) result to part (a). How does increasing the level of confidence in the estimate affect sample size? Why is this reasona th 90% c 99% confic
Transcribed Image Text:Dolled on how many books they read the previous year. Initial survey results indicate that s = 13.4 books. Complet icon to view a partial table of critical values. S fic S fi ct n n n n Partial Critical Value Table Level of Confidence, (1-x) 100% i 90% 95% 99% Area in Each Tail, 33 Print 0.05 0.025 0.005 α 2 Done 8 Critical Value, Zα/2 1.645 1.96 2.575 - 90% con idence level requires subjects. (Round up to the nearest subject.) result to part (a). How does increasing the level of confidence in the estimate affect sample size? Why is this reasona th 90% c 99% confic
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