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WGU Applied-Probability-and-Statistics Exam Syllabus Topics:

WGU Applied Probability and Statistics (FZO1 C955) Sample Questions:

1. Conditional probability P(A|B) = P(A and B)/P(B) #

A) True only if P(B) = 0
B) True
C) False
D) True only if A and B are mutually exclusive

2. A t-distribution is used when:

A) # known, large sample
B) # unknown, small sample
C) Data continuous
D) Population categorical

3. A fitness center owner notices that gym attendance increases as the number of daylight hours increases. The owner calculates a correlation coefficient between daylight hours and gym attendance of r = 0.72.
Based on this information, what can be concluded?

A) There is a negative association between daylight hours and gym attendance.
B) There is a positive association between daylight hours and gym attendance.
C) There is a positive, causal relationship between daylight hours and gym attendance.
D) There is a negative, causal relationship between daylight hours and gym attendance.

4. A city council surveys residents and business owners about a proposed new public transportation system. The results of the survey are shown in the following 2 × 2 contingency table.

Which statement is true?

A) A resident is much more likely than a business owner to favor the new transportation system.
B) A resident is much less likely than a business owner to favor the new transportation system.
C) A resident is slightly less likely than a business owner to favor the new transportation system.
D) A resident is slightly more likely than a business owner to favor the new transportation system.

5. In a game, a coin is tossed, and a spinner with 8 equal spaces numbered 1 through 8 is spun.
What is the probability of getting heads on the coin and a number less than 3 on the spinner?

A) 1/2
B) 1/8
C) 1/4
D) 3/8

Solutions: