Does stretching before exercise reduce the chance of injury? To answer this question, a random sample of 800 athleteswas selected and split into two groups based on stretching preference. Of the 450 who do not stretch prior to exercise,231 suffered an injury during the previous year. Of the 350 who stretch prior to exercise, 55 suffered an injury during theprevious year. Is there enough evidence to conclude that stretching prior to exercise reduces the chance of injury basedon these data?2 State the hypotheses for the situation described above.

Null hypothesis: Alternative hypothesis:

Answered: Does stretching before exercise reduce…

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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Does stretching before exercise reduce the chance of injury? To answer this question, a random sample of 800 athletes was selected and split into two groups based on stretching preference. Of the 450 who do not stretch prior to exercise, 231 suffered an injury during the previous year. Of the 350 who stretch prior to exercise, 55 suffered an injury during the previous year. Is there enough evidence to conclude that stretching prior to exercise reduces the chance of injury based on these data? Calculate the test statistic. You must show your work for full credit.
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Does stretching before exercise reduce the chance of injury? To answer this question, a random sample of 800 athletes was selected and split into two groups based on stretching preference. Of the 450 who do not stretch prior to exercise, 231 suffered an injury during the previous year. Of the 350 who stretch prior to exercise, 55 suffered an injury during the previous year. Is there enough evidence to conclude that stretching prior to exercise reduces the chance of injury based on these data? Find and interpret the p-value.
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