V Jump to level 1 1 The mean voltage and standard deviation of 13 batteries from each manufacturer were 2 measured. The results are summarized in the following table. 3 Manufacturer Sample mean Population standard voltage (millivolts) deviation(millivolts) A 150 H B 148 3 What type of hypothesis test should be performed? | Select Select What is the test statistic? Ex: 0. 123 Left-tailed z-test Paired t-test What is the number of degrees of freedom? Ex: 25 Two-tailed z-test Unpaired t-test 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 2 3 Check Next