An investigator wants to determine if a new exercise program aimed at reducing the overall mean...

An investigator wants to determine if a new exercise program aimed at reducing the overall mean body weight among senior citizens is more effective than no exercise. A survey of 81 participants in the program finds their average body weight to be 150 lbs with a sample standard deviation of 9 lbs, while 100 senior citizens with no exercise had a sample bodyweight of 200 lbs with a sample standard deviation of 10 lbs.

Complete the following to test the hypothesis that the mean body weight those wh exercised is less than that of those who did not.

Research hypothesis:

Ha: H0:

Test statistic

Critical value at α=.01.

Conclusion:

Possible error in terms of the problem:

Construct a 95% confidence interval for the average body weight of senior citizens who did the exercise program,

Solutions

Expert Solution

orchestra answered 2 years ago

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