People were polled on how many books they read the previous year. Initial survey results indicate that s = 10.7 books. Complete parts (a) through (d) below. Click the icon to view a partial table of...

Question #8 Part A

Extracted text: People were polled on how many books they read the previous year. Initial survey results indicate that s = 10.7 books. Complete parts (a) through (d) below. Click the icon to view a partial table of critical values. ..... Partial critical value table (a) How many subjects are needed to estimate the mean number of books read the previous year within six books with 95% confidence? This 95% confidence level requires subjects. (Round up to the nearest subject.) Level of Confidence, Critical Value, Za/2 (1- a) • 100% Area in Each Tail, 2 90% 0.05 1.645 95% 0.025 1.96 99% 0.005 2.575 Print Done