My library > QNT/275T: Statistics for Decision Making home > zyBooks catalog ? Help/FAQ & Tony 6.4: Hypothesis test for the difference between two population means Jump to level 1 An electrician wants to know whether batteries made by two manufacturers have 2 significantly different voltages. The voltage of 84 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 103 3 B 102 5 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 = 0.01 significance level? Select v