Please Help With This 2 Part Problem 1 (139.43 KiB) Viewed 23 times
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 claim that when the 13th day of a month falls on a Friday, the numbers of hospital admissions from motor vehicle crashes are not affected. 9 6 10 7 11 Friday the 6th Friday the 13th 11 11 15 11 10 In this example, ho 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. << (Round to two decimal places as needed.) П<на
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 8.3 1.8 7.4 9.4 13.2 4.5 2.4 1.6 3.2 After 6.6 2.2 7.8 8.8 8.9 6.1 2.3 Construct a 95% confidence interval for the mean of the "before - after" differences. <Hd < < (Round to two decimal places as needed.)
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