Mathematics, 30.09.2020 01:01 anaisabelx7654
The mean life of a battery is 50 hours with a standard deviation of 6 hours. The
manufacturer advertises
that they will replace all batteries that last less than 38 hours. If the data is normally
distributed, how many batteries out of 2000 produced will they have to replace?
250
100
50
150
Answers: 2
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Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.
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The mean life of a battery is 50 hours with a standard deviation of 6 hours. The
manufacturer adver...
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