CCSS.Math.Content.HSS.CP.A.2

If the odds of being born on each day of the week is equal, what is the probability of two separate babies both being born on a school day? (Monday through Friday)

• 5/7
• 5/14
• 25/49
• 1/49

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CCSS.Math.Content.HSS.CP.A.2

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 dependent or independent?

• Independent
• Dependent

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CCSS.Math.Content.HSS.CP.A.2

Clara picks a marble at random, puts it back, and then picks another marble at random.

• Dependent
• Independent

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CCSS.Math.Content.HSS.CP.A.2

What is P(A and B) if P(A) = 1/2 and P(B) = 2/7, where A and B are independent events?

• 1/7
• 1/12
• 5/8
• 1/2

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CCSS.Math.Content.HSS.CP.A.2

If P(A) = 0.34 and P(A or B) = 0.71, which of the following is false? 

• a) P(B) = 0.37, if A and B are disjoint.
• b) P(B) = 0.561, if A and B are independent.
• c) Cannot be determined if A and B are neither disjoint nor independent.
• d) P(A∣B)= 0.34, if A and B are independent.

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CCSS.Math.Content.HSS.CP.A.2

What is the chance that you will spin a 6 twice in a row?

• 1/12

• 1/3

• 1/6

• 1/9

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CCSS.Math.Content.HSS.CP.A.2

Use the probabilities in the Venn Diagram to determine if the events A and B are independent.

• A and B are independent because (0.25)(0.6) = 0.15.

• A and B are not independent because (0.25)(0.6) = 0.15.

• A and B are not indepedent because (0.4)(0.75) = 0.3 not 0.15.

• A and B are indepedent because (0.4)(0.75) = 0.3 not 0.15.

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CCSS.Math.Content.HSS.CP.A.2

The probability of two friends having birthday on the same day in a year

• 1/365

• 31/365

• 1/365²

• 364/365²

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CCSS.Math.Content.HSS.CP.A.2

CCSS.Math.Content.HSS.CP.B.8

Are the events "Sports" and "Community Service" independent?

• Yes, because P(S) is the same as P(S|CS).

• No, because P(S) is not the same as P(S|CS).

• Yes, because P(S) is the same as P(CS|S).

• No, because P(S) is not the same as P(CS|S).

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CCSS.Math.Content.HSS.CP.A.2

A coin is tossed and then a regular 6-sided die is rolled. What is the probability of the resulting outcome being

(tails, even)?

• 1/2

• 1/12

• 1/6

• 1/4

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CCSS.Math.Content.HSS.CP.A.2

CCSS.Math.Content.HSS.CP.B.8