College Math Placement Test Statistics 4

Question 1

The scores 12, 15, 14, 10, 14, 13, 16 have a mean of 13.43. What is the approximate range?

Accepted Answer

6

Answer

4

Answer

3

Answer

5

Question 2

A scatter plot shows data points closely following a line that slopes upward from left to right. This indicates:

Accepted Answer

A strong positive correlation

Answer

A strong negative correlation

Answer

No correlation

Answer

A nonlinear relationship

Question 3

What is the probability that a randomly selected card from a standard deck is a heart OR a king?

Accepted Answer

17/52

Answer

4/13

Answer

16/52

Question 4

A teacher reports that 40% of students passed. If there are 80 students, how many did NOT pass?

Accepted Answer

48

Answer

32

Answer

40

Answer

60

Question 5

Which of the following is an example of qualitative (categorical) data?

Accepted Answer

Favorite color

Answer

Height in centimeters

Answer

Number of siblings

Answer

GPA on a 4.0 scale

Question 6

The median of the data set {3, 7, 9, 15, 21} is:

Accepted Answer

9

Answer

7

Answer

15

Answer

11

Question 7

In hypothesis testing, a p-value of 0.03 with a significance level α = 0.05 means:

Accepted Answer

Reject the null hypothesis

Answer

Fail to reject the null hypothesis

Answer

The result is inconclusive

Answer

The alternative hypothesis is false