The mean voltage and standard deviation of 18 batteries from each manufacturer were measured. The results are summarized in the following table. Manufacturer | Sample mean voltage (millivolts) Sample standard deviation A 106 CT B 102 2 What type of hypothesis test should be performed? Select v 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 o = 0.1 significance level? Select v