. Question 8 Frequency 0 8 16 24 32 40 Wait time in minutes: Dr. Jones Q 12 'S Co Frequency 8 16 24 Wait time in minutes: Dr. Smith Q The graphs above are histograms of the data summarized in the table below. Doctor S Jones 23 16.4 12. 19 Smith 24 7.8 6.92You wish to do a hypothesis test to determine whether there is a difference in the expected wait time at the two doctor's offices. Examine the info given, and determine whether you should proceed with the test. '13:} Yes, since even though the sample sizes are both under 30, the sample distributions appear to be approximately normal '33:? No, we need to do a T-test and we don't have the Degrees of Freedom '33:? Yes, we have all the information we need to do a Z-Test '33:? No, since the sample sizes are both under 30 and the sample distributions are clearly skewed to the right . Question 9 14 12 'S Co Frequency A No 0 8 16 24 32 40 48 56 64 72 80 Wait time in minutes: Dr. Jones Q 14 Frequency NA 0 8 16 24 32 40 48 56 64 72 80 Wait time in minutes: Dr. Smith Q The graphs above are histograms of the data summarized in the table below. Doctor n S Jones 38 13.1 14.86 Smith 35 12.1 13.95You wish to do a hypothesis test to determine whether there is a difference in the expected wait time at the two doctor's offices. Examine the info given, and determine whether you should proceed with the test. ""3? No, since the sample distributions are clearly skewed to the right 533' Yes, since the sample distributions appear to be approximately normal ""33 No, we need to do a T-test and we don't have the Degrees of Freedom '5'} Yes; since both sample sizes exceed 30, it does not matter if the distributions are skewed 0 Question \"ID v When doing a T-Test to compare two population means with unknown population standard deviations, the formula for finding the Degrees of Freedom is pretty messy: 2 2 2 2 1 i + 1 2 1111 1'11 1121 \"2 You can compute this by hand, or just do the 2-Samp'l'l'est on a calculator and select "No" after the Pooled? prompt. Consider the random sample data in this table: Use a calculator to find the following for a left tailed test. Round all answers to three decimals. a. d. f : b.T: c. P value