Question 1165764
This is a one-way t-test
test stat is a t(0.975, df=14)= (xbar-mean)/s/sqrt(n)

Ho: means are the same or the joggers are less
Ha: Joggers are more
critical value  t > 1.761

t=(43.6-36.7)/6/sqrt(15)
=6.9*sqrt(15)/6=4.45

Reject Ho.  Maximal oxygen uptake by joggers is more than the average of all adults.
p-value=0.0003