Ninety-eight women and 225 men participated in a five kilometer road race. Below are summary statistics from Minitab on their times in the race.
Descriptive Statistics: Women, Men
Variable
Women
Men
N
98
225
Mean
28.891
24.758
St Dev
6.181
5.026
Minimum
17.717
15.050
QI
24:229
21.117
Median
26.917
24.050
03
32.525
27.608
Maximum
48.800
48.417
1. Santiago finished in 51st place among the men, with a time of 20.9 minutes. Keisha finished
33.d among women, with a time of 25.2 minutes. Use percentiles and r-scores to compare
Santiago's and Keisha's relative standing among men and women, respectively.

Submarines control how much they float or sink in the ocean by changing the volume of air and water contained in large ballast tanks. when the tanks are completely full of water, the submarine increases its overall mass and sinks down to the bottom. when the tanks are completely full of air, the submarine reduces its overall mass and floats to the surface. depending on the density of the seawater surrounding the submarine, it will pump seawater in or out of the tanks in order to achieve the same overall density as the sea water and float neutrally in the water. the volume of the submarine never changes. when the tanks are completely full of water, a submarine with a volume of 7.8\times10^3\text{ m}^37.8×10 3 m 3 7, point, 8, times, 10, start superscript, 3, end superscript, space, m, start superscript, 3, end superscript has a total mass of 8\times10^6\text{ kg}8×10 6 kg8, times, 10, start superscript, 6, end superscript, space, k, g. the density of the seawater is 10^3\text{ kg/m}^310 3 kg/m 3 10, start superscript, 3, end superscript, space, k, g, slash, m, start superscript, 3, end superscript. to make that submarine float neutrally, and neither float nor sink in the ocean, what volume of water does that submarine need to subtract from its tanks?