Question

Pizza delivery times at Pizza Time are normally distributed with a mean time of 27 minutes and a standard deviation of 3 minutes. Approximately what percent of pizzas are delivered between 24 and 30 minutes?. The choices are the following:. 32%. . 68%. . 95%. . 99.7%

Answer 1

68% of the data will be within one standard deviation of the mean, so 68% of delivery times will be at least 27-3=24 and at most 27+3=30.