03085 04672 02255 05328121 a recruitment company receives numerous pho
A recruitment company receives numerous phone calls throughout the day from customers looking for job. Most of these callers are put "on hold" until a company operator is free to help them. The company has determined that thel ength of time a caller is on hold follows a normal distribution with a mean of 3 minutes and a standard deviation1 minute. What proportion of the company's callers are put on hold is less than 2 minutes or more than 4.5 minutes? 0.3085 0.4672 0.2255 0.5328121
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