13 A small library holds 1240 books: 312 of the 478 novels (N) have hard 1240 covers (H), and there are 440 books that do not have hard covers. Some of this information is shown in the Venn diagram opposite. 9 =166 b=274 Co 488 Find the value of a, of b and of c. 312 a a b A random selection of 25 of these books is to be donated to a 478 charity group. The charity group hopes that at least 22 of the books will be novels or hard covers. Calculate the probability that the charity group gets what they hope for.
13 A small library holds 1240 books: 312 of the 478 novels (N) have hard 1240 covers (H), and there are 440 books that do not have hard covers. Some of this information is shown in the Venn diagram opposite. 9 =166 b=274 Co 488 Find the value of a, of b and of c. 312 a a b A random selection of 25 of these books is to be donated to a 478 charity group. The charity group hopes that at least 22 of the books will be novels or hard covers. Calculate the probability that the charity group gets what they hope for.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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