please help with this question

In a study, temperature readings (in Fahrenheit) were taken at different locations in 1972 and in 2020. The average daily temperatures for the month of June in each of 41 different locations are listed below. Test if there is any difference between the mean temperatures of 1972 and 2020. Year n Average Standard deviation 1972 41 84 12.2 2020 41 85 9.1 Difference (d = X1972 - X2020) 41 -1.0 5.6 (a) What are the null and alternative hypotheses? Ho: P 0 HA: P 0 (b) What are the test statistic and degrees of freedom (use conservative lower bound if not assuming equal variances)? to = (Round your answer to 3 decimal places, if needed.) of = (Provide an integer.)