State the conclusion. Recall that a = 0.05. Choose the correct answer below. O A. Fail to reject Ho. There is not sufficient evidence that the mean mortality rate is different for the two towns. O B. Fail to reject Ho. There is sufficient evidence that the mean mortality rate is different for the two towns. O C. Reject Ho. There is sufficient evidence that the mean mortality rate is different for the two towns. O D. Reject Ho. There is not sufficient evidence that the mean mortality rate is different for the two towns. b) The boxplots of the two distributions show an outlier among the data north of Derby. What effect might that have had on the test? Choose the correct answer below. O A. The effect of the outlier will be small, so the results are still valid. O B. Since only one sample has an outlier, the results are still valid. O C. The outlier does not affect any of the summary data, so the results are valid. O D. The outlier means that the data may not be normal, so the results are not valid. StatCrunch Tech Help Time Remaining: 01:25:01 Submit Quiz= Quiz: M9-Ch14 Quiz Question 10 This Quiz: 10 pts possible Submit Quiz Data were collected on the annual mortality rate (deaths per 100,000) for males in 61 large towns in England and Wales. The data set also notes for each town whether it was south or north of Derby. The summary statistics are given below. Is there a significant difference in mortality rates in the two regions? Answer parts a and b. Assume a significance level of a = 0.05. Group Count Mean Me North 37 1635.29 X South 24 1483.88 14 Graph/Chart Click the icon to view the boxplot of the data. Find the P-value. 2000- The P-value is. (Type an integer or decimal rounded to three decimal pl 1800- State the conclusion. Recall that a = 0.05. Choose the d 1600- Mortality O A. Fail to reject Ho. There is not sufficient evidence 1400- O B. Fail to reject Ho. There is sufficient evidence tha 1200- O C. Reject Ho. There is sufficient evidence that the 1000- O D. Reject Ho. There is not sufficient evidence that North South b) The boxplots of the two distributions show an outlier below. O A. The effect of the outlier will be small, so the rest Print Done O B. Since only one sample has an outlier, the result O C. The outlier does not affect any of the summary O D. The outlier means that the data may not be normal, so the results are not valid. StatCrunch Tech Help Time Remaining: 01:24:54 Submit QuizE Quiz: M9-Ch14 Quiz Question 10 This Quiz: 10 pts possible Submit Quiz Data were collected on the annual mortality rate (deaths per 100,000) for males in 61 large towns in England and Wales. The data set also notes for each town whether it was south or north of Derby. The summary statistics are given below. Is there a significant difference in mortality rates in the two regions? Answer parts a and b. Assume a significance level of a = 0.05. Group Count Mean Median StdDev North 37 1635.29 1635 131.28 South 24 1483.88 1469 152.05 Click the icon to view the boxplot of the data. . . . . . a) Test the null hypothesis at a = 0.05 using the two-sample t-test. Identify the null and alternative hypotheses. Choose the correct answer below. O A. HO: HN - HS = 0 OB. HO: HN - HS = 0 HA: HN - HS > 0 HA : HN - HS # 0 O C. HO: HN - HS # 0 OD. HO: HN - HS = 0 HA: HN - HS = 0 HA: HN - HS
