P-2 Probability Quiz (Independent/Dependent)

Events A and B are independent.

The probability of Event A is 0.7 and the probability of Event B is 0.5. What is the probability of A and B?

• 0.35
• 0.25
• 0.12
• 0.70

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.4

Events C and D are independent.

P(C) = 0.8 P(C and D) = 0.6 P(D) = ____?

• 0.5
• 0.75
• 0.9
• 1.2

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.4

Events E and F are independent.

The probability of Event E is 0.3 and the probability of E and F is 0.24. What is the probability Event F?

• 0.8
• 0.1
• 0.2
• 0.5

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.4

Events G and H are independent.

P(G) = 0.2 P(H) = 0.9 P(G∩H)= ___?

• 0.18
• 0.25
• 0.11
• 0.02

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.4

Events A and B are independent events.  Which statement must be true?

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

• P(A and B) = P(A) / P(B)

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.4

Events A and B are independent events.  Which statement must be true?

• P(A) = P(A|B)

• P(A) = P(B|A)

• P(A) = P(A and B)

• P(A) = P(A) / P(B)

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.4

Rylie rolls a 5 three times in a row. 

Because she rolled a 5 three times in a row the likelihood that she will roll a 5 on her next roll is __A__  because the relationship between the events is ___B___

• A. the same,

  B. independent

• A. the same,

  B. dependent

• A. more likely,

  B. dependent

• A. less likely,

  B. independent

Tags

CCSS.HSS.CP.A.5

• independent, because P(C) ≠ P(S)

• dependent, because P(C) ≠ P(S)

• independent, because P(C) ⋅ P(S) = P(C and S)

• dependent, because P(C) ⋅ P(S) ≠ P(C and S)

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.4

• independent, because P(C) = P(C and S)

• dependent, because P(C) ≠ P(S)

• independent, because P(C) ⋅ P(S) = P(C and S)

• dependent, because P(C) ⋅ P(S) ≠ P(C and S)

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.4

The probability that a randomly selected student owns an Android phone is independent of the probability the student is wearing a hoodie. Which of the following statements must be true?

• The probability that a randomly selected student owns an Android phone is increases if the student is wearing a hoodie.

• The probability that a randomly selected student owns an Android phone decreases if the student is not wearing a hoodie.

• The probability that a randomly selected student owns an Android phone is increases if the student is not wearing a hoodie.

• The probability that a randomly selected student owns an Android phone is stays the same if the student is not wearing a hoodie.

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.4