An achievement test in a beginning computer science course was administered to two groups. One group had had a previous computer science course in high school; the other group had not. The test results follow. Assuming test scores are normal, construct a 98% confidence interval for the difference between the two population means.

Transcribed Image Text:

Group 1 thad high 17 18 27 1 24 36 27 26 35 22 18 2 (no high 9 25 28 27 21 24 18 14 28 21 22 school course 20 21 14 29 28 25 17 20 28 31 27