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The mean voltage and standard deviation of 9 batteries from each manufacturer were measured. The results are summarized in the following table. Manufacturer A B Sample mean voltage (millivolts) 171 167 Population standard deviation (millivolts) What is the test statistic? Ex: 0.123 2 4 What type of hypothesis test should be performed? Select Select Left-tailed z-test Paired t-test Two-tailed z-test Unpaired t-test What is the number of degrees of freedom? Ex: 25 Does sufficient evidence exist to support the claim that the voltage of the batteries made by the two manufacturers is different at the a = 0.1 significance level? Select v

The mean voltage and standard deviation of 9 batteries from each manufacturer were measured. The results are summarized in the following table. Manufacturer A B Sample mean voltage (millivolts) 171 167 Population standard deviation (millivolts) What is the test statistic? Ex: 0.123 2 4 What type of hypothesis test should be performed? Select Select Left-tailed z-test Paired t-test Two-tailed z-test Unpaired t-test What is the number of degrees of freedom? Ex: 25 Does sufficient evidence exist to support the claim that the voltage of the batteries made by the two manufacturers is different at the a = 0.1 significance level? Select v

MATLAB: An Introduction with Applications
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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75T: Statistics X zy Section 5.4- QNT/275T: Statistics X 56598163/chapter/5/section/4 for Decision Making home > ence between two population means 5.4.1: Hypothesis test for the difference between two population means. Jump to level 1 The mean voltage and standard deviation of 9 batteries from each manufacturer were measured. The results are summarized in the following table. Manufacturer B Y OF GULFSIDE Check 171 What is the test statistic? Ex: 0.123 + Sample mean voltage (millivolts) 167 Next What type of hypothesis test should be performed? Select MESA 81101 What is the number of degrees of freedom? Ex: 25 Two-tailed z-test Unpaired t-test Population standard deviation(millivolts) Does sufficient evidence exist to support the claim that the voltage of the batteries made by the two manufacturers is different at the a = 0.1 significance level? Select v 2 2 4 hp Select Left-tailed z-test Paired t-test 3 8
Transcribed Image Text:75T: Statistics X zy Section 5.4- QNT/275T: Statistics X 56598163/chapter/5/section/4 for Decision Making home > ence between two population means 5.4.1: Hypothesis test for the difference between two population means. Jump to level 1 The mean voltage and standard deviation of 9 batteries from each manufacturer were measured. The results are summarized in the following table. Manufacturer B Y OF GULFSIDE Check 171 What is the test statistic? Ex: 0.123 + Sample mean voltage (millivolts) 167 Next What type of hypothesis test should be performed? Select MESA 81101 What is the number of degrees of freedom? Ex: 25 Two-tailed z-test Unpaired t-test Population standard deviation(millivolts) Does sufficient evidence exist to support the claim that the voltage of the batteries made by the two manufacturers is different at the a = 0.1 significance level? Select v 2 2 4 hp Select Left-tailed z-test Paired t-test 3 8
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