a. How large a sample size is necessary if the width of the 95% interval is to be 40? d. What sample size is necessary to estimate true aver- age porosity to within 2 with 99% confidence?
a. How large a sample size is necessary if the width of the 95% interval is to be 40? d. What sample size is necessary to estimate true aver- age porosity to within 2 with 99% confidence?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 22SGR
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