Help answering this question

An electrician wants to know whether batteries made by two manufacturers have 2 significantly different voltages. The voltage of 87 batteries from each manufacturer were measured. The population standard deviations of the voltage for each manufacturer are 3 known. The results are summarized in the following table. Manufacturer Sample mean Population standard voltage (millivolts) deviation (millivolts) A 152 B 151 3 What type of hypothesis test should be performed? Select 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 = 0.05 significance level? Select v