Unit 8 - Probability Quiz Review

What is the probability that a student does play a sport given they do not play an instrument? 

• .2
• .2222
• .10
• .5

Mary is a good student. The probability that she studies and passes her test is 3/5. If the probability that she studies is 8/9. What is the probability that she passes given that she studies? 

• 27/40
• 1.48
• .008
• .0593

Consider the following table with information about all of the students taking Statistics at Happy High School.

Find P( Female | Part-time) =

• 15/31

• 43/71

• 31/43

• 15/43

Given the following VENN Diagram answer the following.

P( A | B )

• 0.3

• 0.2

• 1/2

• 2/3

Which Venn Diagram represents mutually exclusive events?

• 
• 

Suppose events A and B are independent and P(A and B) is 0.2. Which statement could be true?

• P(A) = 0.4, P(B) = 0.3, P(A or B) = 0.5

• P(A) = 0.8, P(B) = 0.25

• P(A|B) = 0.2, P(B) = 0.2

• P(A) = 0.15, P(B) = 0.05

Are events A and B independent?

• Yes

• No

Sean's team has a baseball game tomorrow. He pitches 50% of the games. There is a 40% chance of rain during the game tomorrow. If the probability that it rains given that Sean pitches is 40%, it can be concluded that these two events are

• independent

• dependent

• mutually exclusive

• complements