CHALLENGE ACTIVITY 6.4.1: Hypothesis test for the difference between two population means. 361666.1905872.qx3zqy7 Jump to level 1 The mean voltage and standard deviation of 9 batteries from each manufacturer were measured. The results are summarized in the following table. Manufacturer Sample mean Population standard voltage (millivolts) deviation(millivolts) A 137 3 B 134 1 What type of hypothesis test should be performed? |Select What is the test statistic? Ex: 0.123 What is the number of degrees of freedom? Ex: 25 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