(a) If a shaft is selected at random, what is the probability that the shaft conforms to surface finish requirements or to roundness requirements or is from Tool 1? (b) If a shaft is selected at random, what is the probability that the shaft conforms to surface finish requirements or does not conform to roundness requirements or is from Tool 2? (c) If a shaft is selected at random, what is the probability that the shaft conforms to both surface finish and roundness requirements or the shaft is from Tool 2? (d) If a shaft is selected at random, what is the probability that the shaft conforms to surface finish requirements or the shaft is from Tool 2?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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(a) If a shaft is selected at random, what is the probability that the shaft conforms to surface finish requirements or to roundness requirements or is from Tool 1? (b) If a shaft is selected at random, what is the probability that the shaft conforms to surface finish requirements or does not conform to roundness requirements or is from Tool 2? (c) If a shaft is selected at random, what is the probability that the shaft conforms to both surface finish and roundness requirements or the shaft is from Tool 2? (d) If a shaft is selected at random, what is the probability that the shaft conforms to surface finish requirements or the shaft is from Tool 2?
Machine Tools 1 & 2
roundness conforms
yes
245
no
surface finish
conforms
yes
4
no
9
12
Machine Tool 1
roundness conforms
yes
132
no
surface finish
conforms
yes
2
no
3
7
Machine Tool 2
roundness conforms
yes
113
no
surface finish
conforms
yes
no
6
5
Transcribed Image Text:Machine Tools 1 & 2 roundness conforms yes 245 no surface finish conforms yes 4 no 9 12 Machine Tool 1 roundness conforms yes 132 no surface finish conforms yes 2 no 3 7 Machine Tool 2 roundness conforms yes 113 no surface finish conforms yes no 6 5
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