Probability and Two-Way Tables Answers

Find P(B|C).

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?

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

Answer the questions to determine if events N and V independent. Round your answers to the nearest hundredth. P(N|V) = ⇒ 0.62 P(N) = ⇒ 0.59 Are events N and V independent events? Yes or no? ⇒ no

Which statements are true? Check all that apply.

Use the information in the two-way table to complete the statement. The probability that a person has a positive Rh factor given that he/she has type O blood is percent. There is a greater probability for a person to have a than a person to have a positive Rh factor given type O blood.

Is Miguel’s claim correct?

Which statement is true?

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