A consumer group studied the service provided by fast-food restaurants in a given community. One of the things they looked at was the relationship between service and whether the server had a high school diploma or not. The information is summarized in the table below:   Good Service Poor Service Total HS diploma 61 28 89 No HS diploma 30 81 111 Total 91 109 200   Find  a. P(Poor Service | No HS Diploma) b. P(Poor Service ∩ No HS Diploma)  c. P(Poor Service ∪ No HS Diploma)

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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A consumer group studied the service provided by fast-food restaurants in a given community. One of the things they looked at was the relationship between service and whether the server had a high school diploma or not. The information is summarized in the table below:

  Good Service Poor Service Total
HS diploma 61 28 89
No HS diploma 30 81 111
Total 91 109 200

 

Find 

a. P(Poor Service | No HS Diploma)

b. P(Poor Service ∩ No HS Diploma) 

c. P(Poor Service ∪ No HS Diploma)

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