A Bank Would Like to Evaluate Whether There Is a Difference

Short Answer

A bank would like to evaluate whether there is a difference in the effectiveness in the methods they use to teach their management trainees. For 10 employees that are taught by method 1, the average score on an evaluation examination was 86 with a standard deviation of 6 . For 12 employees taught by method 2 , the average score was 81 with a standard deviation of 4.
-State the hypotheses for the two-tailed test in symbols.