Sample 1: 64, 52, 72, 56, 80, 68, 75, 58, 48, 55 Sample 2: 72, 36, 84, 92, 54, 72, 80, 62, 44, 32
How much greater is the interquartile range in Sample 2 than in Sample 1?
4.8
19
25
28

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.

What is the volume of the sphere shown below with a radius of 3?

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)