Question

A book shelf holds twenty books. Eleven are hard- covered, nine of the books are nonfiction, and four of the nonfiction books are hard-covered, as shown in the Venn diagram. Let event H be a hard-covered book and let event N be a nonfiction book

Answer 1

1. 4/20

2. 11/20

3. 4/11

Explanation:

I got it right

Answer 2

1) Find the probability that a chosen book is nonfiction and hard-covered. P(N ∩ H) = 4/20

2) Find the probability that a chosen book is hard-covered. P(H) = 11/20

3) Calculate the conditional probability. = 4/11

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1.) 4/20

2.) 11/20

3.) 4/11