The mean voltage and standard deviation of 10 batteries from each manufacturer were measured The results are summarized in the following table. Manufacturer 3 Sample mean voltage (millivolts) 105 98 Population standard deviation(millivolts) 5 4 What type of hypothesis test should be performed0 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?