Fix-it copiers advertises a mean time of 100 minutes for, Ask an Expert

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Fix-It Copiers advertises a mean time of 100 minutes for office calls with a standard deviation of 25 minutes. What percentage of calls are completed:

a. between 100 and 120 minutes?

b. in less than 120 minutes?

c. in less than 60 minutes?

d. between 120 and 150 minutes?

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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