addition/mult/conditional probability

Which of the following shows how to determine P(packers or male)?

• 75/150 + 90/150 - 50/150
• 75/150 + 35/150 - 25/150
• 50/150 + 40/150 + 25/150
• 90/150 + 50/150 - 75/150

Tags

CCSS.HSS.CP.B.7

A recent study of a metropolitan area found that 31% of people owned a SUV, 74% of people surveyed owned a car, and 10% owned both. What's the probability that a randomly chosen person owned a SUV or a car?

• 85%

• 95%

• 5%

• 15%

Tags

CCSS.HSS.CP.B.7

The enrollment at Southburg High School is 1400.  Suppose 550 students take French, 700 take algebra, and 400 take both French and algebra.  What is the probability that a student selected randomly takes French or algebra?

• 1250/1400
• 700/1400
• 550/1400
• 17/28

Tags

CCSS.HSS.CP.B.7

A key ring has 12 keys, 3 of which open the house door. If two keys are randomly selected without replacement, what is the probability that neither key opens the door?

Tags

CCSS.HSS.CP.B.8

CCSS.HSS.CP.B.9

CCSS.HSS.CP.A.1

Sonia has 5 yellow hair clips, 2 red hair clips, and 3 blue hair clips in her purse. What is the probability that she will randomly select one yellow hair clip and one blue hair clip without replacement?

Tags

CCSS.HSS.CP.B.8

CCSS.HSS.CP.A.3

CCSS.HSS.CP.B.9

A bag contains 5 red marbles, 4 blue marbles, and 3 green marbles. Joshua will select a marble at random, record its color, and then put the marble back in the bag. He will select three marbles in this way. What is the probability that Joshua will first get a red marble, then a blue marble, and then a green marble?

Tags

CCSS.HSS.CP.B.8

CCSS.HSS.CP.A.2

What does it mean for two events to be independent of each other?

• What happens in the second event depends on what happens in the first.

• The result of the first event has no effect on the result of the next event.

Tags

CCSS.HSS.CP.A.5

The outcome of one event does affect the outcome of the other event.

• independent event

• dependent event

Tags

CCSS.HSS.CP.A.5

A bag contains some red-colored and some blue-colored marbles. First a red-colored marble is drawn and then, without replacing the first marble, a blue-colored marble is drawn. Are the two events independent or dependent?

• Independent

• Dependent

Tags

CCSS.HSS.CP.A.5

There are 5 red roses, 3 yellow roses, and 8 white roses in a tray. If Stephanie picked 2 roses one after the other without replacing, then what is the probability of picking a white rose first and a red rose next?

• 1/6
• 5/6
• 1/3
• 2/3

Tags

CCSS.HSS.CP.B.8

CCSS.HSS.CP.A.3

CCSS.HSS.CP.B.9

CCSS.HSS.CP.B.6