reidfoley reidfoley

13-05-2023
Business

Answered

a study of long-distance phone calls made from general electric reveled the length of the calls, in minutes, follows the normal probabibility distrbution. the mean length of time per call was 4.5 minutes and the standard deviation was 0.70 minutes. what is the probability that calls last between 4.0 and 6.0 minutes?

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