A recent study of 20 individuals found that the average number of hours of physical therapy these persons required to recover from a knee replacement was 29.6 , with a standard deviation of 3.8. A separate study of 25 individuals found that the average number of P.T. hours people required to recover from a hip replacement surgery was 30.3 , with a standard deviation of 4.3 . Assume the population variances are not equal. At a = 0.02, test the claim that there is a statistically significant difference in the sample means. Show all steps of the hypothesis test You GenduGt.

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calcul…