16.For the equation y=4+9x,

a. they-intercept is _________, and the slope is _____________.

b. the line

A. slopes upward

B. slopes downward

C. is horizontal

D. none of the above

17.Suppose you are given finishing times of a sample of 15 marathon runners for the men's open championships. A histogram is created.

What type ofstatisticsis thishistogram?________

A. DESCRIPTIVE

B. INFERENTIAL

18.Consider the following data set:

53 27 48 39 15 53 42 27 36

29 11 39 11 20 55 14 34 27

Below is a partially completed stem-and-leaf diagram for this data set:

1 ____________

____ _____________

3 ______________

____ 28

_____ _____________

Determine the correct values for the missing entries, and fill them in. If no value is needed for a given entry, then enter X.