The time spent waiting for a heart transplant in Ohio and MIchigan for patients with A+ blood can be approximated by a normal distribution with a mean of 127 days and a standard deviation of 23.5 days. What is the longest time spent waiting for a heart that would still place a patient in the bottom 10% of waiting times?
Shade the bell curve, Use the z-table to find the z-score that corresponds to 10%, convert the z-score back to the actual number.