Please round correctly. it says to the nearest subject! com/AlgebeDo Homework -

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Please round correctly. it says to the nearest subject!

com/AlgebeDo Homework - Belinda Banuelds Explorer MAT k.aspx rkld 4726879068questionld-168fl true&icld-4923632icenterwin-ys; Help MAT135C02 Intro to Statistics: MA1 SP18 (Stacy Baumgartner) Belinda Banuelos & 3/25/18 6:29 PM Homework: Chapter 9 Homework Save Score: 0 of 1 pt 14 of 20 (20 complete) HW Score: 68 5196, 13.7 of 20 pts 9.2.47 People were polled on how many books they read the previous year Initial survey results indicate that s 15.3 books. Complete parts (a) through (d) below (a) How many subjects are needed to estimate the mean number of books read the previous year within four books with 95% confidence? This 95% confidence level requires 57 subjects Round up to the nearest sub ect) (b) How many subjects are needed to estimate the mean number of books read the previous year within two ocks with e5% confidence, This 95% confidence level requires subjects. (Round up to the nearest subject.) Question Help

Explanation / Answer

a)

Sample size = ( Z * S / E)2

= (1.96 * 15.3 / 4)2

= 56.21

= 57 (Rounded up to nearest integer)

b)

Sample size = ( Z * S / E)2

= (1.96 * 15.3 / 2)2

= 224.82

= 225 (Rounded up to nearest integer)

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