A local pizza restaurant advertises a service that delivers pizza within 15 minutes. The histogram
above was produced by a customer who timed
the restaurant's delivery service to the nearest
minute for 15 deliveries. Based on the
histogram, what is the mean delivery time, in
minutes, of the restaurant?
A) 14.4
B) 14.8
C) 15.2
D) 15.6
Диаграмма наверху