An electrician wants to know whether batteries made by two manufacturers have significantly different voltages. The voltage of 138 batteries from each manufacturer were measured. The population standard deviations of the voltage for each manufacturer are known. The results are summarized in the following table. Manufacturer Sample mean voltage (millivolts) Population standard deviati A 110 4 B 109 2 What type of hypothesis test should be performed?|v Select Left-tailed z-test Two-tailed t-test What is the test statistic? Ex: 0.12 S Two-tailed z-test Left-tailed t-test Does sufficient evidence exist to support the claim thhat uie vUItayt vi liit vateries made by the two manufacturers is different at the a = 0.1 significance level? Select O

An electrician wants to know whether batteries made by two manufacturers have significantly different voltages. The voltage of 138 batteries from each manufacturer were measured. The population standard deviations of the voltage for each manufacturer are known. The results are summarized in the following table. Manufacturer Sample mean voltage (millivolts) Population standard deviati A 110 4 B 109 2 What type of hypothesis test should be performed?|v Select Left-tailed z-test Two-tailed t-test What is the test statistic? Ex: 0.12 S Two-tailed z-test Left-tailed t-test Does sufficient evidence exist to support the claim thhat uie vUItayt vi liit vateries made by the two manufacturers is different at the a = 0.1 significance level? Select O

Name: An electrician wants to know whether batteries made by two manufactur
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Description: An electrician wants to know whether batteries made by two manufacturers havesignificantly different voltages. The voltage of 138 batteries from each manufacturerwere measured. The population standard deviations of the voltage for eachmanufacturer a

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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An electrician wants to know whether batteries made by two manufacturers have significantly different voltages. The voltage of 131 batteries from each manufacturer were measured. The population standard deviations of the voltage for each manufacturer are known. The results are summarized in the following table. Manufacturer Sample mean voltage (millivolts) Population standard deviat A 116 3 115 4 What type of hypothesis test should be performed? Right-tailed z-test v What is the test statistic? Ex: 0.12 Does sufficient evidence exist to support the claim that the voltage of the batteries made by the two manufacturers is different at the a = 0.01 significance level? Select v
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An electrician wants to know whether batteries made by two manufacturers have significantly different voltages. The voltage of 96 batteries from each manufacturer were measured. The population standard deviations of the voltage for each manufacturer are known. The results are summarized in the following table. Manufacturer Sample mean voltage (millivolts) Population standard deviation (millivolts) A 105 4 B 104 3 What type of hypothesis test should be performed? What is the test statistic? Does sufficient evidence exist to support the claim that the voltage of the batteries made by the two manufacturers is different at the α=0.05 significance level?
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