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D An electrician wants to know whether batteries made by two manufacturers have significantly different voltages. The voltage of 71 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 107 106 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 ow the two manufacturers is different at the a = 0. 1 significance level