Probability test review

An automobile dealer decides to select a month for its annual sale.  Find the probability that it will be September or October.

• 1/12
• 1/6
• 1/4
• 5/6

Tags

CCSS.7.SP.C.7A

At a community swimming pool there are 2 managers, 8 lifeguards, 3 concession stand clerks, and 2 maintenance people.  If a person is selected at random, find the probability that the person is either a lifeguard or a manager.

• 2/3
• 8/15
• 2/15
• not enough information

Tags

CCSS.HSS.CP.B.7

A recent study of 200 nurses found that of 125 female nurses, 56 had bachelor's degrees:  and of 75 male nurses, 34 had bachelor's degrees.  If a nurse is selected at random, find the probability that the nurse is a female or has a bachelor degree.

• 159/200
• 125/200
• 215/200
• 90/200

Tags

CCSS.HSS.CP.B.7

P(A) = .4
P(B) = .55
P(A intersection B) = .3
Find P(AUB)

• .65
• .95
• .3
• What?????

Tags

CCSS.HSS.CP.B.7

P(A) = .49
P(A') = ?

• 1
• .49
• .51
• 0

Tags

CCSS.7.SP.C.5

At a particular school with 200 male students, 58 play football, 40 play basketball, and 8 play both.  What is the probability that a randomly selected male student plays neither sport?

• 49/100
• 29/100
• 51/100
• 9/20

Tags

CCSS.HSS.CP.B.7

The Bargain Auto Mall has these cars in stock.  If a car is selected at random, find the probability that it is Domestic or an SUV.

• 210/300
• 85/300
• 295/300
• 230/300

Tags

CCSS.HSS.CP.B.7

A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?

• 5/6
• 1/2
• 1/3
• 1/6

What is sample space?

• a process with an uncertain result

• a possible result of an action

• a list of all possible outcomes of an event

• a single outcome or group of outcomes

A number cube is rolled. What is the probability of getting a 6 or a number less than 3? Simplify.

• 1/3

• 1/12

• 1/2

• 1/18

Tags

CCSS.HSS.CP.B.7