2An article reported the results of a study to determine whether treadmill exercise could improve the walking ability of patients sufferingfrom claudication, which is pain caused by insufficient blood flow to the muscles of the legs. A sample of 44.00 patients walked on atreadmill for 6 minutes every day. After 6 months, the mean distance walked in 6 minutes was 348 m, with a standard deviation of 80m. For a control group of 42.00 patients who did not walk on a treadmill, the mean distance was 309 m with a standard deviation of 89m. Can you conclude that the mean distance walked for patients using a treadmill is greater than the mean for the controls? Use the a= 0.05 level of significance. Find the P-value and state a conclusion. (Round the final answer to four decimal places.)The P-value is 0.0172 xWe cannot conclude that the mean distance walked for patients using a treadmill is greater than the mean for the controls.

To determine whether the mean distance walked for patients using a treadmill is greater than the…

Answered: 2 An article reported the results of a…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Volunteers who had developed a cold within the previous 24 hours were randomized to take either zinc or placebo lozenges every 2 to 3 hours until their cold symptoms were gone. Twenty-five participants took zinc lozenges, and 23 participants took placebo lozenges. The mean overall duration of symptoms for the zinc lozenge group was 3.5 days, and the standard deviation of overall duration of symptoms was 1.4 days. For the placebo group, the mean overall duration of symptoms was 7.2 days, and the standard deviation was 2 days. (a) Calculate a 95% confidence interval for the mean overall duration of symptoms if everyone in the population were to take the zinc lozenges. (Round your answers to two decimal places.) to days (b) Calculate a 95% confidence interval for the mean overall duration of symptoms if everyone in the population were to take the placebo lozenges. (Round your answers to two decimal places.) to days
Volunteers who had developed a cold within the previous 24 hours were randomized to take either zinc or placebo lozenges every 2 to 3 hours until their cold symptoms were gone. Twenty-five participants took zinc lozenges, and 23 participants took placebo lozenges. The mean overall duration of symptoms for the zinc lozenge group was 4.5 days, and the standard deviation of overall duration of symptoms was 1.6 days. For the placebo group, the mean overall duration of symptoms was 8 days, and the standard deviation was 1.8 days. (a) Calculate a 95% confidence interval for the mean overall duration of symptoms in a population of individuals like those who used the zinc lozenges. (Round your answers to two decimal places.)to days(b) Calculate a 95% confidence interval for the mean overall duration of symptoms in a population of individuals like those who used the placebo lozenges. (Round your answers to two decimal places.)to days(c) On the basis of the intervals computed in parts (a) and…

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