Mathematics, 24.07.2020 19:01 trevorhenyan51
A television cable company receives numerous phone calls throughout the day from customers reporting service troubles and from would-be subscribers to the cable network. Most of these callers are put "on hold" until a company operator is free to help them. The company has determined that the length of time a caller is on hold is normally distributed with a mean of 3.1 minutes and a s. d of 0.9 minute. What percentage of company’s callers are put on hold for at least 4.8 minutes?
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