An instructor thinks that math majors can write and debug computer programs faster than business majors. A sample of 12 math majors took an average of 36 minutes to write a specific program and debug it; a sample of 18 business majors took an average of 39 minutes. The standard deviations were 4 minutes and 9 minutes, respectively. At confidence interval = .10, is there evidence to support the claim? [Assumption: population variances are equal]
State the hypothesis: (indicate which is the claim)
Compute the test statistic: ?
Make a decision and state conclusion. ?