A school counselor was interested in the effect of a new program designed to reduce adjustment problems in newly transferred students. From her years of working at the school, she knew that the average score on a scale of adjustment difficulties for a transfer student was 58 with a standard deviation of 10. After the new program had been implemented, she tested 50 students and found their mean to be 52. Was this difference significant at the .01 level?
a. Use the five steps of hypothesis testing.
b. Sketch the distributions involved.
c. Figure the confidence limits for the 99% confidence interval.

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The Answer of A school counselor was interested in the effect of a new program designed to reduce adjustment problems in newly transferred students. From her years of working at the school, she knew that the average score on a scale of adjustment difficulties for a transfer student was 58 with a standard deviation of 10. After the new program had been implemented, she tested 50 students and found their mean to be 52. Was this difference significant at the .01 level?
a. Use the five steps of hypothesis testing.
b. Sketch the distributions involved.
c. Figure the confidence limits for the 99% confidence interval.

A School Counselor Was Interested in the Effect of a New