SOLUTION: Suppose that 50 identical batteries are being tested. After 8 hours of continuous use, assume that a given battery is still operating with a probability of 0.70 and has failed with
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Question 723655: Suppose that 50 identical batteries are being tested. After 8 hours of continuous use, assume that a given battery is still operating with a probability of 0.70 and has failed with a probability of 0.30.
What is the probability that fewer than 40 batteries will last at least 8 hours?
A. 0.7986
B. 0.9211
C. 0.9598
D. 0.0789 Answer by lynnlo(4176) (Show Source):
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