Question

were poiled on how many books they read the previous year Intial survey results indicate that s 17.7 books. Complete parts (a) through (d) below Click the ioon 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% co nfidence? 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 requres subjects (Round up to the nearest subject.) (e) 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 halves the sample size. ○ C. Doubling the required accuracy nearly doubles the sample size. O D. Doubling the required accuracy nearly quadruples the sample size. t d) How many sub ects are needed to estimate the mean number of books read the previous year within six books with 99% confidence? Click to select your answerfs).

Answer 1