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6 April, 04:44

A batch of 100 batteries is tested to determine the number of defective items. the probability that fewer than 3 batteries are defective is 0.85. the probability that the number of defective batteries is from 3 to 8 is 0.09. the probability that the number of defective batteries is from 9 to 14 is 0.05. what is the probability that 15 or more batteries are defective?

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  1. 6 April, 04:51
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    The probability that 14 or fewer are defective is

    ... 0.85 + 0.09 + 0.05 = 0.99

    The the probability that 15 or more are defective is

    ... 1 - 0.99 = 0.01
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