A third party manufacturer of batteries for Android phones claims that a new battery model can provide more than 240 continuous minutes of talk time on a single charge. Consumer reports wants to confirm this claim and selects a simple random sample of 40 batteries for testing. The batteries produce a sample average of 255 minutes, and a sample standard deviation of 50 minutes. Construct a null and alternate hypothesis that Consumer Reports should use to confirm the claim. Based on the sample data, what can they conclude? Use a 0.05 level of significance. [show excel function and input]
A third party manufacturer of batteries for Android phones claims that a new battery model can provide more than 240 continuous minutes of talk time on a single charge. Consumer reports wants to confirm this claim and selects a simple random sample of 40 batteries for testing. The batteries produce a sample average of 255 minutes, and a sample standard deviation of 50 minutes. Construct a null and alternate hypothesis that Consumer Reports should use to confirm the claim. Based on the sample data, what can they conclude? Use a 0.05 level of significance. [show excel function and input]
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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A third party manufacturer of batteries for Android phones claims that a new battery model can provide more than 240 continuous minutes of talk time on a single charge. Consumer reports wants to confirm this claim and selects a simple random sample of 40 batteries for testing. The batteries produce a sample average of 255 minutes, and a sample standard deviation of 50 minutes. Construct a null and alternate hypothesis that Consumer Reports should use to confirm the claim. Based on the sample data, what can they conclude? Use a 0.05 level of significance. [show excel
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