A Cornell University study of wage differsstils between men and wemet reported that speled the Tresone Youusing Week August 28, 2060.) An agency takes two indeper I comes up with the following data 1 2 149 * * 10.3 years years n , 4 5 3 4 3.8 1, 4 25 a) Construct a 95% confidence interval for the diff tween the two population ) What are the important assumptions for the proc re that you use to be valid? in order to determine ample of of students were given the exam before and never taking the course. The results are shown below. Let d - Score After - Score Before. Student Before the Course After the Course 83 87 driving exam. Use the following information. Mean Median StDev 2 6 84.50 84.50 84.50 6.06 86.50 87.50 86.50 5.79 2.00 2.00 2.00 3.52 measures the time that the employees take in finishing a particular type of task with the They compute the difference d=(new old) for each of these 10 employees to be able to estimate , In the comparison, they find that the mean of these differences is 67 minutes nd standard deviation 12 minutes. Construct a 95% confidence interval for the mean of such differences for the entire population of their employees. Assume a normal population. s of the female magisteridents while of Koo male registered voters, 180 Indicated they planning to vote for the incumbent president. At # - .05, test to see if there vote for the incumbent president . Report the P_value of the Test . . An economist wishes to see the difference in the proportion of households receiving households with $15,000 or more income per year . A random sample from Households with $15,000 or more income is taken. The results of the samples are $5,000 $15,000 or Group : Group 2 Sample size 200 150 Medicare Construct a 95% con desired above