Probability from Mutually Exclusive and Inclusive events

A die is rolled.  What is the probability of rolling a 5 or a number greater than 3?

• 2/3
• 1/2
• 5/6
• 1

Which formula do you use when two events are mutually exclusive?

• P(A or B) = P(A) + P(B)
• P(A or B) = P(A) + P(B) - P(both)
• P(A and B) = P(A) * P(B)
• P (A and B) = P(A) * P(B|A)

A math teacher is setting a test for the class next week. The Probability that the test will be on Monday is 10%, Tuesday is 20%, Wednesday is 45% and Thursday is 15% What is the probability that the test will be on Friday?

• 15%

• 5%

• 20%

• 10%

Tags

CCSS.7.SP.C.5

There are 5 red roses, 3 yellow roses, and 8 white roses in a tray. What is the probability of picking a white rose or a red rose?

• 13/16

• 12/16

• 11/16

• 14/16

Tags

CCSS.HSS.CP.B.7

If you roll one die, what is the probability of getting an odd number or a 4?

• 2/3
• 1/3
• 1/2
• 1/6

Tags

CCSS.HSS.CP.B.7

Which formula do you use when two events are NOT mutually exclusive?

• P(A or B) = P(A) + P(B)

• P(A or B) = P(A) + P(B) - P(A and B)

• P(A and B) = P(A) * P(B)

• P (A and B) = P(A) * P(B|A)

Which of the following shows how to determine P(diamond or face card)?

• 13/52 + 12/52 - 3/52
• 3/52 + 13/52 -12/52
• 3/52 + 12/52 - 13/52
• 1/13 + 3/52 - 1/4

Tags

CCSS.HSS.CP.B.7

If you draw one card from a standard deck, what is the probability of drawing a 5 or a diamond?

• 2/52
• 4/52
• 16/52
• 26/52

Tags

CCSS.HSS.CP.B.7

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

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