Suppose that 50 identical batteries are being tested
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 25 batteries will last at least 8 hours? A.0.9991
B.0.0009
C.0.8967
D.0.0024
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