Sample size n1 = 89
Sample size n2 = 103
Mean voltage of type k batteries = 8.51
Population standard deviation of type k batteries = 0.312
a. Calculate the 95% confidence interval for the mean voltage of type k batteries.
b. Perform a hypothesis test to determine if the mean voltage of type k batteries is significantly different from 8.6.
c. Compare the mean voltage of type k batteries to the mean voltage of type q batteries using a t-test.
d. Create a histogram of the voltage measurements for type k batteries to visually assess the distribution of the data.