Solved THIRD TIME ASKING THIS. FIRST TIME WAS IN THE WRONG

The time (minutes) taken for a technician to complete routine maintenance on two different machines is given below: Machine 1={15,20,11,23,16,21,18,16,27,24} Machine 2={23,31,13,19,23,17,28,26,25,28} Test the hypothesis that the mean maintenance time for machine 1 is less than that of machine 2. Calculate and compare the test statistic to the critical value(s), and print the conclusion of the test. The analysis should include assessment of any underlying assumptions. Note: If ssmall ​slarge ​​≤1.5, assume that the population variances are equal.