Statistics: Normal Distribution for Eye Surgical Procedure

A health care analyst would like to know that if the duration of a given eye surgical procedure has a normal distributionwith a meanof 240 minutes and a standard deviationof 40 minutes, what percent of procedures of this type lasts between 220 and 260 minutes?

This solution contains step-by-step calculations to determine the percentage of eye surgical procedures that last between 220-260 minutes.