Probability

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

In a statistics class there are 18 juniors and 10 seniors;  6 of the seniors are females, and 12 of the juniors are males.  If a student is selected at random, find the probability of selecting a junior or a female.

• 24/28
• 12/28
• 18/28
• 6/28

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 Foreign and mid-sized.

• 20/300
• 135/300
• 155/300
• 40/300

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 bag contains 30 pieces of candy. There are 15 grape, 7 cherry, 3 lemon, 5 strawberry. What is the probability of drawing a lemon?

• 3
• 1/10
• 3/10
• 30%

Tags

CCSS.7.SP.C.7B

The theoretical probability of rolling an even number on a dice.

• 3/6

• 1/2

• 1/6

• 5/6

Tags

CCSS.7.SP.C.7A

In a drawer, there are 6 white socks, 4 black socks, and 2 brown socks. You pick out a sock, replace it, then pick out a 2nd sock. What is the probability that you will pick a brown, then black sock?

• 1/11

• 1/18

• 1/36

• 2/33

Find the theoretical probability of landing on orange or red if you spin the spinner.

• 0
• 3/8
• 2/8
• 1/4

Tags

CCSS.7.SP.C.7B

The two spinners above are spun. What is the probability of getting a perfect square (1,4,9,16), then the letter Z? 

• 3/20
• 9/20
• 1/8
• 11/40