# Question: 11 4 the amount of time that a patron spends...

###### Question details

11. [4] The amount of time that a patron spends, upon entering a
restaurant, waiting for a table, ordering a meal, and eating a meal
varies according to a normal model with µ_{X} = 28.1
minutes and s_{X} = 2.3 minutes. The
amount of time once the patron is finished with the meal to the
time they exit the restaurant also varies according to a normal
model with µ_{Y} = 9.8 minutes and s_{Y} = 1.8
minutes. The two events are independent of each other.
What is the probability that a person spends a total of
45 minutes or more altogether in the restaurant? Use appropriate
function notation to show your work.