The box plots summarize the masses, in kilograms, of two groups of gazelles. Based on the box plots, which of the following statements must be true?

A. The mean mass of group 1 is greater than the mean mass of group 2. B. The mean mass of group 1 is less than the mean mass of group 2. C. The median mass of group 1 is greater than the median mass of group 2. D. The median mass of group 1 is less than the median mass of group 2.

What is the interquartile range for the data set?
8, 1, 7, 3, 7, 2, 6, 7, 9

A. 3.5

B. 5

C. 5.6

D. 7

Select the correct answer from each drop-down menu.

The table shows data from a survey on college enrollment.

The marginal total 4.293 is _____ . The relative frequency of females in the 35 -plus age group compared with the total number of students, expressed as a percentage, is ____

What is the range for the following set of data?

3, 5, 4, 6, 7, 10, 9

The dotplot shows heights of college women; the mean is 64 inches (5 feet 4 inches) and the standard deviation is 3 inches.

Complete parts a and b below.

a. What is the z-score for a height of 64 inches ( 5 feet 4 inches)?

b. What is the height of a woman with a z-score of 1 ? inches