1.9 3.2 Question Help 3.6 2.8 0 A study was conducted to measure the effectiveness of hypnotism in reducing pain. The measurements are centimeters on a pain scale before and after hypnosis. Assume that the paired sample data are simple random samples and that the differences have a distribution that is approximately normal. Construct a 95% confidence interval for the mean of the "before - after" differences. Does hypnotism appear to be effective in reducing pain? Before After 6.0 6.8 4.4 9.7 2.3 7.1 Construct a 95% confidence interval for the mean of the "before-after" differences. Friday the 6th Friday the 13th 9 11 Data on the numbers of hospital admissions resulting from motor vehicle crashes are given below for Fridays on the 6th of a month and Fridays on the following 13th of the same month. Assume that the paired sample data is a simple random sample and that the differences have a distribution that is approximately normal. Construct a 95% confidence interval estimate of the mean of the population of differences between hospital admissions. Use the confidence interval to test the cla that when the 13th day of a month falls on a Friday, the numbers of hospital admissions from motor vehicle crashes are not affected. 7 15 7 12 12 11 2 14 In this example, Hd is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the number of hospital admissions on Friday the 6th minus the number of hospital admissions on Friday the 13th. Find the 95% confidence interval. > Pr> (Round to two decimal places as needed.) The data below are yields for two different types of corn seed that were used on adjacent plots of land. Assume that the data are simple random samples and that the differences have a distribution that is approximately normal. Construct a 95% confidence interval estimate of the difference between type 1 and type 2 yields. What does the confidence interval suggest about farmer Joe's claim that type 1 seed is better than type 2 seed? Type 1 2092 Type 2 2018 1994 1972 2146 2597 2277 2034 2181 1453 2074 2477 2172 1968 2176 1467 In this example, g is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the type 1 seed yield minus the type 2 seed yield. The 95% confidence interval is