The mean voltage and standard deviation of 6 batteries from each manufacturer were measured. The results are summarized

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The Mean Voltage And Standard Deviation Of 6 Batteries From Each Manufacturer Were Measured The Results Are Summarized 1 (191.86 KiB) Viewed 60 times

The mean voltage and standard deviation of 6 batteries from each manufacturer were measured. The results are summarized in the following table. Manufacturer Sample mean voltage (millivolts) Population standard deviation(millivolts) A 109 1 B 105 3 What type of hypothesis test should be performed Select Left-tailed z-test What is the test statistic? Ex: 0.123 0 Paired t-test Two-tailed z-test Unpaired t-test What is the number of degrees of freedom? Ex: 250 Does sufficient evidence exist to support the claim that the voltage of the batteries made by the two manufacturers is different at the a = 0.05 significance level? ( Select ,