iPad 4:21 PM C 77%- Mann, Introductory Statistics, 8e Help I System Announcement

Question

iPad 4:21 PM C 77%- Mann, Introductory Statistics, 8e Help I System Announcements (1 Unread Assignment NEXT CES Chapter 08, Section 8.2, Problem 019a For a population data set, 99% confidence interval for is 2.50 ? = 13.0 . How large a sample should be selected so that the margin of error of estimate for a Round your answer up to the nearest whole number the tolerance is +-2% LINK TO TEXT Question Attempts: Unlimited SAVE FOR LATER SUBMIT ANSWER SUBMIT ANS mapleNET udy maplesott.com Copyright 2000-2016 by John Wiley & Sons, Inc. or related companies. All rights reserved. 200 Version 4.18.0.

Explanation / Answer

margin of error = 2.5

the standard deviation = 13

the z score for 99% = 2.57

the margin of error = 2.57*13/sqrt(n) = 2.5

squaring both sides

n = (2.57*13/2.5)^2

n = 179

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