Lifetime of electronics: In 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 o = 20 hours. Round the critical value to no less than three decimal places. (a) Construct a 90 % confidence interval for the mean battery life. Round the answer to the nearest whole number. (b) Find the sample size needed so that a 95 % confidence interval will have a margin of error of 3. Part 1 of 2 (a) Construct a 90 % confidence interval for the mean battery life. Round the answer to the nearest whole number. A 90 % confidence interval for the mean battery life is < µ < Part 2 of 2 (b) Find the sample size needed so that a 95 % confidence interval will have a margin of error of 3. A sample size of is needed so that a 95 % confidence interval will have a margin of error of 3. Round the sample size up to the nearest integer.

Lifetime of electronics: In 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 o = 20 hours. Round the critical value to no less than three decimal places. (a) Construct a 90 % confidence interval for the mean battery life. Round the answer to the nearest whole number. (b) Find the sample size needed so that a 95 % confidence interval will have a margin of error of 3. Part 1 of 2 (a) Construct a 90 % confidence interval for the mean battery life. Round the answer to the nearest whole number. A 90 % confidence interval for the mean battery life is < µ < Part 2 of 2 (b) Find the sample size needed so that a 95 % confidence interval will have a margin of error of 3. A sample size of is needed so that a 95 % confidence interval will have a margin of error of 3. Round the sample size up to the nearest integer.

Name: Lifetime of electronics: In a simple random sample of 100 electronic
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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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