An impormnt feature of tablets is battery life, the number of hours before the battery needs to be recharged. The data shown in the mble below contain the battery life of 10 WiFi-only and 10 36/4G/WiFi 9- through 12-inch tablets. Complete parts (a) through (c). WiFionly 3G/4GIWiFi Q1 43 29 39 33 42 60 56 60 60 56 43 24 38 55 55 2140 34 47 60 a. Assuming that the population variances from both types of tablets are equal, is there evidence of a difference in the mean battery life between the two types of tablets? Use 0: = 0.01. Let W be the mean battery life for WiFionly tablets and p2 be the mean battery life for SG/4GNViFi tablets. Determine the hypotheses. Choose the correct answer below. OA. H01p15p2 OB. Ho:p1zp2 H1zp1>u2 H1zp1 H2 Find the test statistic. Test Statistic = Round to two decimal places as needed.) Find the critical value(s). (Use a comma to separate answers as needed. Round to three decimal places as needed.) Choose the correct conclusion below. O A. Reject Ho. There is sufficient evidence that the mean waiting time between the two branches differ. O B. Do not reject Ho. There is sufficient evidence that the mean waiting time between the two branches differ. O C. Do not reject Ho. There is insufficient evidence that the mean waiting time between the two branches differ. O D. Reject Ho. There is insufficient evidence that the mean waiting time between the two branches differ.b. Determine the p-value in (a) and interpret its meaning. p-value = (Round to four decimal places as needed.) Interpret the p-value. Choose the correct answer below. 0 A. It is the probability of obtaining a sample that yields a t test statistic farther away from 0 in the negative direction than the computed test statistic if there is no difference in the mean waiting time between Bank A and Bank B. O B. It is the probability of obtaining a sample that yields a t test statistic farther away from 0 in the positive direction than the computed test statistic if there is no difference in the mean waiting time between BankA and Bank B. O C. It is the probability of obtaining a sample that yields a t test statistic farther away from 0 in either direction than the computed test statistic if there is no difference in the mean waiting time between Bank A and Bank B. c. In addition to equal variances, what other assumption is necessary in (a)? O A. Both sampled populations are approximately normal. 0 B. Both sampled populations are not approximately normal. 0 C. The samples are specially chosen and not independently sampled. O D. The sample sizes must be equal. d. Suppose that we were now informed that the standard deviation for both Banks is known: BankAstd. dev. =1.3 and Bank B std. dev. = 2.3! This permits us to perform a Z-test for the difference of the 2 means. In this case, the Z-statistic would be X Data table Bank A Bank B 2.09 3.63 2.23 4.29 3.02 4.07 3.21 5.77 3.87 5.71 4.11 6.01 4.55 6.07 4.63 7.77 5.84 7.73 5.49 10.43