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CHALLENGE ACTIVITY 5.7.1: Hypothesis test for the difference between two population means. Jump to level 1 1 An electrician wants to know whether batteries made by two manufacturers have 2 significantly different voltages. The voltage of 114 batteries from each manufacturer w 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 113 5 B 112 2 What type of hypothesis test should be performed? |Select 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 = 0.1 significance level? Select v 1 Check Next