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San Diego State University Operations And Supply Chain Management Assignment Help - Sample

Question - The amount of time that a drive-through bank teller spends on a customer is a random variable with a
mean µ = 3.2 minutes and a standard deviation s = 1.6 minutes. If a random sample of 64 customers
is observed, find the probability that their mean time at the teller's counter is
(a) At most 2.7 minutes:
(b) More than 3.5 minutes;
(c) At least 3.2 minutes but less than 3.4 minutes.

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