The response time for ski patrol rescue responders is measured by the length of time from when the radio call is finished and when the responders locate the skier. Responders consider between 0 to 5 minutes as an ideal response time.
Supposing gathered data showed a Normal distribution with a mean of 6 minutes and a standard deviation of 1.2 minutes, what percent of responses is considered ideal? Round to the nearest whole percent. Use a z-table to answer the question.