An adventure company runs two obstacle courses, Fundash and Coolsprint, with similar designs. Since Fundash was built on rougher terrain, the designer of the courses suspects that the mean completion time of Fundash is greater than the mean completion time of Coolsprint. To test this, she selects 260 Fundash runners and 245 Coolsprint runners. (Consider these as independent random samples of the Fundash and Coolspring runners.) The 260 Fundash runners complete the course with a mean time of 78.2 minutes and a standard deviation of 8.3 minutes. The 245 individuals complete Coolsprint with a mean time of 76.7 minutes and a standard deviation of 7.7 minutes. Assume that the population standard deviations of the completion times can be estimated to be the sample standard deviations, since the samples that are used to compute them are quite large. At the 0.10 level of significance, is there enough evidence to support the claim that the mean completion time, u1, of Fundash is greater than the mean completion time, l,, of Coolsprint? Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to at least three decimal places. (If necessary, consult a list of formulas.)
An adventure company runs two obstacle courses, Fundash and Coolsprint, with similar designs. Since Fundash was built on rougher terrain, the designer of the courses suspects that the mean completion time of Fundash is greater than the mean completion time of Coolsprint. To test this, she selects 260 Fundash runners and 245 Coolsprint runners. (Consider these as independent random samples of the Fundash and Coolspring runners.) The 260 Fundash runners complete the course with a mean time of 78.2 minutes and a standard deviation of 8.3 minutes. The 245 individuals complete Coolsprint with a mean time of 76.7 minutes and a standard deviation of 7.7 minutes. Assume that the population standard deviations of the completion times can be estimated to be the sample standard deviations, since the samples that are used to compute them are quite large. At the 0.10 level of significance, is there enough evidence to support the claim that the mean completion time, u1, of Fundash is greater than the mean completion time, l,, of Coolsprint? Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to at least three decimal places. (If necessary, consult a list of formulas.)
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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