Answer (Choose 1 answer)
Multiple choices 32/50
(See picture)
A. 0.83
B. 0.72
C. 0.85
Next
D. 0.955
Disks of polycarbonate plastic from a supplier are analyzed for scratch and shock resistance. The results from 200 disks are
summarized as follows:
scratch
resistance
high
low
shock resistance
high
low
144
22
25
9
If a disk is selected at random, what is the probability that its scratch resistance is high or its shock resistance is high?
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و
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