64. The following observations are on time (h) for a AA 1.5- volt alkaline battery to reach a 0.8 voltage ("Comparing the Lifetimes of Two Brands of Batteries J. of Statistical Educ., 2013, online): Energizer: 8.65 8.74 8.91 8.72 8.85 Ultracell: 8.76 8.81 8.81 8.70 8.73 Energizer: 8.52 8.62 8.68 8.86 Ultracell: 8.76 8.68 8.64 8.79 Normal probability plots support the assumption that the population distributions are normal. Does the data suggest that the variance of the Energizer population distribution differs from that of the Ultracell population distribution? Test the relevant hypotheses using a sig- nificance level of .05. [Note: The two-sample 1 test for equality of population means gives a P-value of .763.] The Energizer batteries are much more expensive than the Ultracell batteries. Would you pay the extra money?