Options for test type are left-tailed t-test, left-tailed z-test, right-tailed t-test, or two-tailed z-test.

366676.1997634.qx3zay7 Jump to level 1 1 An electrician wants to know whether batteries made by two manufacturers have 2 significantly different voltages. The voltage of 115 batteries from each manufacturer were measured. The population standard deviations of the voltage for each manufacturer 3 are known. The results are summarized in the following table. Manufacturer Sample mean Population standard voltage (millivolts) deviation (millivolts) A 158 5 B 157 4 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