Question
the time between failures in a quality testing laboratory is modeled by a probability distribution with mean 8 minutes and standard deviation also 8 minutes.
the time between failures in a quality testing laboratory is modeled by a probability distribution with mean 8 minutes and standard deviation also 8 minutes. Failures are considered to occur independently. A quality inspector reviews the failure report log entries starting at 1:15am and examines the next 50 failure entries.
What is the probability that the average time between failures exceeds 7 minutes?
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Mechanics of Materials
Authors: Russell C. Hibbeler
10th edition
134319656, 978-0134319650
