Homework Answers
from above:
| A | B | C | Total | |
| Satisfactory | 3000 | 2500 | 1500 | 7000 |
| Oversized | 880 | 100 | 120 | 1100 |
| Undersized | 200 | 150 | 250 | 600 |
| Total | 4080 | 2750 | 1870 | 8700 |
a)
P(defective part is oversized)=1100/(1100+600)=11/17 (As 1100 oversized part from 1700 defective)
b)
P(defective part given from Company A)=(880+200)/4080=1080/4080=9/34
c)
P(defective and from company C)=(120+250)/8700=370/8700=37/870
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