Use the Normal Model

Multiple Choice

Use the Normal model.
-A small flower shop takes orders by phone and then one of the staff florists is assigned
To prepare the arrangement. The time it takes to process phone orders is normally
Distributed with a mean of 6 minutes and a standard deviation of 2.5 minutes. The time it
Takes for an arrangement to be completed is normally distributed with a mean of 35
Minutes and a standard deviation of 8.6 minutes. What is the probability that it will take
More than 50 minutes to process a phone order and complete the floral arrangement at
This flower shop?

A) 0.8413
B) 0.3413
C) 0.2167
D) 0.1587
E) 0.6843