Probability and Two-Way Tables

Question 1

Find P(B|C).

Revolt · Accepted Answer

P(B|C) = = 0.38

Question 2

The two-way table shows the results of a recent study on the effectiveness of the flu vaccine. Let N be the event that a person tested negative for the flu, and let V be the event that the person was vaccinated.

Revolt · Accepted Answer

⇒ 0.62: 0.40; ⇒ 0.59: 0.40; ⇒ no: Yes

Question 3

Use the information in the two-way table to complete the statement.

Revolt · Accepted Answer

The probability that a person has a positive Rh factor given that he/she has type O blood is percent.: 82; There is a greater probability for a person to have a than a person to have a positive Rh factor given type O blood.: positive Rh factor given type A blood

Question 4

✔ positive Rh factor given type A bloodpositive Rh factor given type AB bloodnegative Rh factor given type A bloodnegative Rh factor given type AB blood

Revolt · Accepted Answer

✔ positive Rh factor given type A blood

Question 5

Out of 106 total sophomores, there were forty-eight boys who received either an A, B, or C on their first math test. Out of the twenty-eight total A’s, sixteen girls received A’s. Out of the total fifty-four B’s, thirty girls received B’s. Twelve boys received a C out of the twenty-four total C’s on the test. Which two-way table represents this information?

Revolt · Accepted Answer

[Image: A 5-column table has 3 rows. The first column has ...]

Question 6

What is the probability that a randomly selected person who tested positive for the flu is vaccinated?

Revolt · Accepted Answer

Answer image: //media.edgenuity.com/EVresources/e6f4824dd8fdd27e5ada767aa95bddff.png

Question 7

Which statements are true? Check all that apply.

Revolt · Accepted Answer

Twenty-three ninth graders and thirty-five twelfth graders prefer math.; Eighteen tenth graders prefer English and fourteen eleventh graders prefer math.

Question 8

Is Miguel’s claim correct?

Revolt · Accepted Answer

No, the two events are not independent because P(PB|NF) ≠ P(PB).

Question 9

Which statement is true?

Revolt · Accepted Answer

The probability of randomly selecting a male student, given that his favorite genre is horror, is .

Question 10

Consider the following events:A: The employee is male.B: The employee is female.C: The employee takes public transportation.D: The employee takes his/her own transportation.E: The employee takes some other method of transportation. Which two events are independent?

Revolt · Accepted Answer

A and C

Probability and Two-Way Tables Answers

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