Textbook ExpertVerified Tutor
12 Nov 2021
Given information
Given that, certain coins have an average weight of 5.201 grams with a standard deviation of 0.065 g. If a vending machine is designed to accept coins whose weights range from 5.111 g to 5.291 g. We have to find the expected number of rejected coins when 280 randomly selected coins are inserted into the machine.
Step-by-step explanation
Step 1.
We have
Then the probability of acceptance is .
Then the probability of rejection=1- the probability of acceptane=
So proportion will be rejected.
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