A company is interested in finding out if there is any difference in the average salary received by managers of two divisions. Accordingly samples of 12 managers' in the tirst division and 10 managers in the second division were selected at random. The results are given below: I division Il division Sample size 12 10 Average monthly salary 12500 11200 Standard deviation 320 480 Apply t-test to find out whether there is a significant difference in the average salary.

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