I need help on these 2 stats questions:

Homework3: Problem 3 (1 point) To compare the effectiveness of a media campaign - via radio ads, billboards, and ads on social media websites - to reduce the incidence of impaired driving, a police chief inspected data from 60 randomly chosen CheckStops at varying |ocations.Thirty of these were before the launch of this campaign, 30 were after the media campaign had been running for a months time. Use a = 0.05 for all calculations. For each CheckStop randomly chosen. the number of people charged with impaired driving was recorded: Prior: 4, 5, 6, 3, 9, 4, 8, 3, 3.13.8, 4,7, 9,14, 2, 9, 2, 4, 8, 9, 7, 5.8.1, 3, 0. 6.183: After: 3, 1o, 5, 4, 6, 3, 3, 4, 4, 3, 12. 8. 6, 3, 5, 6, 2. 4. 6. 2. 5. 6. 5. 6. 6. 4. 7. 3. 7. 4; The data is found in the accompanying .csv data file. Download .csv file Let pgefwe represent the mean number of impaired driving charges at a checkstop prior to the launch of the campaign, and I'After be the mean number of impaired driving charges at a checkstop after the campaign has been running for a month. (a) Does this data suggest that the variation in the number of impaired driving charges before the campaign is equal to the variation in the number of impaired driving charges after the campaign has been running fora month? Apply Levene's test, find the value of the test statistic, using at least two decimals in your answer. Test Statistic = a (b) Report the p-value of the test you ran in (a), using at least three decimals in your answer. P-value = E (0) Testing at a = 0.05, the null hypothesis in (a) would ? c The variation in the distribution of the number of impaired driving charges before the campaign is statistically ? c as the variation distribution of the number of impaired driving charges after the campaign has been running for a month. (d) Using your findings in part (0), find a 95% confidence interval for the difference between the mean number of impaired driving charges before the media campaign and the mean number of impaired driving charges after the media campaign has been running for a month, pBefm \"After. Lower Bound of 95% CI = E (use at least three decimals) Upper Bound of 95% CI = E (use at least three decimals) (e) The confidence interval found in part (d) indicates that the average number of impaired driving charges before the launch of the campaign is ? 6 the mean number of impaired driving charges after the campaign has been running for a month. \fHomework3: Problem 4 (1 point) In a test of two population means - /1 versus /2 - with unknown variances of and o'2, two independent samples of n1 = 8 and n2 = 10 were taken. The data is given below. Both populations are normally distributed. Sample From Population 1: 18, 1, 15, 20, 26, 37, 20, 12 ; Sample From Population 2: 20, 22, 16, 15, 20, 17, 20, 19, 18, 15 ; Download .csv file (a) You wish to test the hypothesis that both populations have the same variance. Choose the correct statistical hypotheses. A. HO : S2 = HA : S2 + S? OB. Ho : 02 = 07 HA : 62 7 03 OC. Ho : 07 7 0, 02 =0 HA : 01 OD. HO : 02 = 07 HA : 67 02 (b) Determine Levene's test statistic for this test. Use at least two decimals in your answer. Test Statistic = (c) Determine the P-value for this test, to at least three decimal places. P = (d) Using a = 0.05, the null hypothesis should ? . From this data and this version of the hypothesis we infer, the variation in Population 1 is statistically |? the variation in Population 2. Preview My Answers Submit Answers"population1", "population2 " "1" , "18",20 "2" , "1", 22 "3" , "15" , 16 "4", "20", 15 "5" , "26",20 "6" , "37" , 17 "7", "20",20 "8" , "12" , 19 "9" "", 18 "10", " ", 15