Using the Exerbike data set,

(a) determine the mean and standard deviation of calories burned per minute

(Cals/M) for 2019.

(b) determine the mean and standard deviation of calories burned per minute

(Cals/M) for 2020.

(c) test ????0 ∶ ????19 ≥ ????20 at the ???? = 0.05 level.

(d) compute a 95% confidence interval for ????19 − ????20.

(e) determine whether or not there is sufficient evidence to conclude ????20 > ????19.