ake a Test Rebecca Swyers Microsoft Edge mathxl.com/Student/playerTest aspx?test

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ake a Test Rebecca Swyers Microsoft Edge mathxl.com/Student/playerTest aspx?testld 1574062488ocentenwin yes MATH220 Elementary Statistics MAR 17 est Chapter 6 Test mme Remaining 005416 s his Question: 1 pt 2 of 7 oomplete) This Test 7pt People were polled on how many books they read the previous year How subjects are needed to estimate the number books read the previous year within ne book with scossneehaulsurvy nes tshoa many of 129 books. A 99% confidence level requires oubjects (Round up to the nearest whole nur lal vi e, an More 1002 PM E Enter your answer in the answer box

Explanation / Answer

here for 99% CI, z=2.5758

margin of error E =1

and std deviaiton =12.9

hence sample size n=(z*std deviation/n)2 =~1105

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