Mathematics, 16.12.2019 18:31 schoolgirl61
Suppose certain coins have weights that are normally distributed with a mean of 5.566 g and a standard deviation of 0.062 g. a vending machine is configured to accept those coins with weights between 5.496 g and 5.636 g.
a. if 270 different coins are inserted in the vending machine, what is the expected number of rejected coins? b. if 270 different coins are inserted in the vending machine, what is the probability that the mean falls between the limits of 5.496 g and 5.636.
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