Question

suppose certain coins have weights that are normally distributed
with a mean of 5.191g and a standard deviation of 0.068 g. A
vending machine is configured to accept those coins with weights
between 5.121 g and 5.261 g. If 260 different coins are inserted
into the vending machine, what is the expected number rejected
coins.

Answer #1

expected number rejected coins = 0.303*260 = 78.78 = 79

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If 260 different coins are inserted into the vending machine,
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a. If 260 different coins are inserted into the vending
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The expected number of rejected coins is? (Round to the
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a. If 280 different coins are inserted into the
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a. If 280 different coins are inserted into the vending
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counterfeit coins are rejected along with some legitimate
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weights between 5.60 g and 5.74...

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