n a simple random sample of 100 electronic components produced by a certain method, the mean lifetime was 125 hours. Assume that component lifetimes are normally distributed with population standard deviation is 20 hours. Round the critical value to no less than three decimal places. Find the sample size needed so that a 99.8% confidence interval will have a margin of error of 2

n a simple random sample of 100 electronic components produced by a certain method, the mean lifetime was 125 hours. Assume that component lifetimes are normally distributed with population standard deviation is 20 hours. Round the critical value to no less than three decimal places. Find the sample size needed so that a 99.8% confidence interval will have a margin of error of 2

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 13PPS

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