Independent and Mutually Exclusive Events

Question 1

What statements are correct? Check all that apply.The conditional probability formula is P(X │ Y) = .The conditional probabilities P(D │ N) and P(N │ D) are equal for any events D and N.The notation P(R │ S) indicates the probability of event R, given that event S has already occurred.Conditional probability applies only to independent events.Conditional probabilities can be calculated using a Venn diagram.

Revolt · Accepted Answer

A: The conditional probability formula is P(X │ Y) = .; C: The notation P(R │ S) indicates the probability of event R, given that event S has already occurred.; E: Conditional probabilities can be calculated using a Venn diagram.

Question 2

Given that a randomly chosen student participates in band, what is the probability that the student also participates in track?

Revolt · Accepted Answer

B:

Question 3

Question 3

Revolt · Accepted Answer

D: 80/154

Question 4

Question 4

Revolt · Accepted Answer

B

Question 5

A box contains four red balls and eight black balls. Two balls are randomly chosen from the box, and are not replaced. Let event B be choosing a black ball first and event R be choosing a red ball second. What are the following probabilities? P(B) = P(R | B) = P(B ∩ R) = The probability that the first ball chosen is black and the second ball chosen is red is about percent.

Revolt · Accepted Answer

C: 8/12

Question 6

At a hospital, 56 percent of the babies born are not girls. Of the baby girls born, 12 percent are premature. What is the probability of a premature baby girl being born at this hospital? Round to the nearest percent.

Revolt · Accepted Answer

A: 5%

Question 7

Question 7

Revolt · Accepted Answer

12/35

Question 8

Question 8

Revolt · Accepted Answer

C

Question 9

Question 9

Revolt · Accepted Answer

A,B,C,D,E

Question 10

Question 10

Revolt · Accepted Answer

B: 47/87

Independent and Mutually Exclusive Events Answers

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