Can someone help me with 1, 2 and 3 plz

The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). the mean maximum oxygen uptake for elite athletes has been found to be 60 with a standard deviation of 7.2. assume that the distribution is approximately normal.

Can someone me with the property questions for 12 13 and 14 plz

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a