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A toothpaste firm claims that a survey of 65 people revealed the following results: 8 use Happy and Close Up 9 use Happy and Colgate 11 use Colgate and Close Up 21 use Happy only 15 use Close Up only 11 use only Colgate only How many uses exactly 2 brands? Select one: O a. 8 O b. 13 O c.5 O d. 15

A toothpaste firm claims that a survey of 65 people revealed the following results: 8 use Happy and Close Up 9 use Happy and Colgate 11 use Colgate and Close Up 21 use Happy only 15 use Close Up only 11 use only Colgate only How many uses exactly 2 brands? Select one: O a. 8 O b. 13 O c.5 O d. 15

A First Course in Probability (10th Edition)
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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A toothpaste firm claims that a survey of 65 people revealed the following results: 8 use Happy and Close Up 9 use Happy and Colgate 11 use Colgate and Close Up 21 use Happy only 15 use Close Up only 11 use only Colgate only How many uses exactly 2 brands? Select one: O a. 8 O b. 13 О с. 5 O d. 15
Transcribed Image Text:A toothpaste firm claims that a survey of 65 people revealed the following results: 8 use Happy and Close Up 9 use Happy and Colgate 11 use Colgate and Close Up 21 use Happy only 15 use Close Up only 11 use only Colgate only How many uses exactly 2 brands? Select one: O a. 8 O b. 13 О с. 5 O d. 15
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