Please help with these two parts!!

Suppose we are testing the hypothesis Ho : HA - HB = 5 For the sample from group A, we have N = 19 sample average HA = 77.3 and sample standard deviation 6 A = 0.93 For the sample from group B, we have N = 15 , sample average H B = 74.2 and sample standard deviation OB = 1.67 What is the test statistic for this hypothesis test? Please enter your answer rounded to 2 decimal places. D Question 22 5 pts What are the degrees of freedom for the previous problem? Please enter your answer rounded to 1 decimal place