The box plots show the average speeds, in miles per hour, for the race cars in two different races

d) the median speed in race a is about 153 miles per hour, and the median speed in race b is about 145 miles per hour.

Explanation:

The whole question is written below:

The box plots show the average speeds, in miles per hour, for the race cars in two different races (figure attached) . Which statement compares the median speeds for the data in the two box plots?

a) the median speed in race a is about 142 miles per hour, and the median speed in race b is about 140 miles per hour.

b) the median speed in race a is about 120 miles per hour, and the median speed in race b is about 125 miles per hour.

c) the median speed in both races is about 165 miles per hour.

d) the median speed in race a is about 153 miles per hour, and the median speed in race b is about 145 miles per hour.

Firstly, let's explain how to read a box plot (as the shown in the second figure):

The outer extreme points are the minimum and maximum values, respectively.The inner extreme points are the first quartile (also called lower median) and the third quartile (also called upper median).The point in the middle is Median.

So, according to this, the median for race a (top plot) is between 150 and 155, and the median for race b (bottom plot) is 145.

Hence, among the given options the correct is:

d) the median speed in race a is about 153 miles per hour, and the median speed in race b is about 145 miles per hour.

Based on all the information that can be discerned from the
graph provided with the question, it may, for all we know, depict
the gyrations of the New York Stock Exchange during World War II,
or possibility the thickness of the ozone layer in the Earth's atmosphere
over the past 77 years. 

It is almost certainly NOT a graphic representation of velocity, since it is
really tough to graph both speed and direction of a moving object.