A fitness course claims that it can improve an individual's physical ability. To test the effect of a physical fitness course on one's phySical ability, the number of sit-ups that a person could do in one minute, both before and after the course, was recorded. Ten individuals are randomly selected to participate in the course. The results are displayed in the following table. Can it be concluded, from the data, that participation in the physical fitness course resulted in significant improvement? Let d = (number of sit-ups that can be done after taking the course)-(number of sit-ups that can be done prior to taking the course) . Use a significance level of a = 0.05 for the test. Assume that the numbers of sit-ups are normally distributed for the population both before and after taking the fitness course. Sit-ups before 38 40 48 39 22 40 34| 23 41 28 Sit-ups after 52 50 58 43 29 53 51 34 53 41 Copy Data Step 2 of 5: Find the value of the standard deviation of the paired differences. Round your answer to one decimal place.

A fitness course claims that it can improve an individual's physical ability. To test the effect of a physical fitness course on one's phySical ability, the number of sit-ups that a person could do in one minute, both before and after the course, was recorded. Ten individuals are randomly selected to participate in the course. The results are displayed in the following table. Can it be concluded, from the data, that participation in the physical fitness course resulted in significant improvement? Let d = (number of sit-ups that can be done after taking the course)-(number of sit-ups that can be done prior to taking the course) . Use a significance level of a = 0.05 for the test. Assume that the numbers of sit-ups are normally distributed for the population both before and after taking the fitness course. Sit-ups before 38 40 48 39 22 40 34| 23 41 28 Sit-ups after 52 50 58 43 29 53 51 34 53 41 Copy Data Step 2 of 5: Find the value of the standard deviation of the paired differences. Round your answer to one decimal place.

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Description: Step 1 of 5:State the null and alternative hypotheses for the test.Step 2 of 5: Find the value of the standard deviation of the paired differences. Round your answer to two decimal places.Step 3 of 5:Compute the value of the test statistic. Round you

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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