1 A ) The Perceived Stress Scale developed by Cohen (1988) has a mean score of 13 02, and a standard deviation of 7 35, for the general population of adults A researcher in a college health center is interested in determining if the perceived stress of new mother's students differs from the general population She surveys a random sample of 16 new mothers who have just given birth to their first child she finds the mean perceived stress score for this sample was 16 4 Test the null hypothesis at the 05 level of significance Include the step by step hypothesis test summary illustrated in the text on p 187 and in my class notes (10 points) B) Even when we have calculated a statistical test correctly Statistical decisions are based on probability and therefore, they may be correct or in error Given the decision that you made in Part A of this problem, if your decision is in error, what kind of error would you have made What can you do to decrease the probability of making this error (5 pts) 2 A ) A government researcher has found that the general population of American adults have an average cholesterol level of 192 with a standard deviation of 8,6 points Central State University Diet Center has developed a new diet program that they believe will significantly lower cholesterol They randomly selects a sample of 36 adults who agree to follow the new diet program for a 6 month period At the end of 6 months, cholesterol measurements are made on the sample and the average cholesterol level is found to be 188 Test the hypothesis that the new diet program was successful in reducing cholesterol levels Use the 01 level of significance Include the step by step hypothesis test summary illustrated in the text on p 187 and in my class notes (10 points) B) Even when we have calculated a statistical test correctly st atistical decisions are based on probability and therefore, they may be correct or in error Given the decision that you made in Part A of this problem, if your decision is in error, what kind of error would you have made What can you do to decrease the probability of making this error (5 pts)

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1. A ) The Perceived Stress Scale developed by Cohen (1988) has a mean score of 13.02, and a standard deviation of 7.35, for the

1. A) The Perceived Stress Scale developed by Cohen (1988) has a mean score of 13.02, and a standard deviation of 7.35, for the general population of adults.A researcher in a college health center is interested in determining if the perceived stress of new mother's students differs from the general population.She surveys a random sample of 16 new mothers who have just given birth to their first child she finds the mean perceived stress score for this sample was 16.4.Test the null hypothesis at the .05 level of significance. Include the step by step hypothesis test summary illustrated in the text on p. 187 and in my class notes. (10 points)
B) Even when we have calculated a statistical test correctly. Statistical decisions are based on probability and therefore, they may be correct or in error.Given the decision that you made in Part A of this problem, if your decision is in error, what kind of error would you have made?What can you do to decrease the probability of making this error? (5 pts)

2. A) A government researcher has found that the general population of American adults have an average cholesterol level of 192 with a standard deviation of 8,6 points.Central State University Diet Center has developed a new diet program that they believe will significantly lower cholesterol.They randomly selects a sample of 36 adults who agree to follow the new diet program for a 6 month period.At the end of 6 months, cholesterol measurements are made on the sample and the average cholesterol level is found to be 188.Test the hypothesis that the new diet program was successful in reducing cholesterol levels.Use the .01 level of significance.Include the step by step hypothesis test summary illustrated in the text on p. 187 and in my class notes. (10 points)

B) Even when we have calculated a statistical test correctly statistical decisions are based on probability and therefore, they may be correct or in error.Given the decision that you made in Part A of this problem, if your decision is in error, what kind of error would you have made?What can you do to decrease the probability of making this error? (5 pts)