Tina is hiking in the grand canyon. she began the day 15 below sea level and ended her day 4,300 feet above sea level. how much higher did tina end the hike than she started the hike?

The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.2 days and a standard deviation of 1.7 days. what is the probability of spending more than 2 days in recovery? (round your answer to four decimal places.)