Police response time to an emergency call is the difference between the time the call is first received by the
dispatcher and the time a patrol car radios that it has arrived at the scene. Over a long period of time, it has
been determined that the police response time has a normal distribution with a mean of 9 minutes and a
standard deviation of 1 minutes. For a randomly received emergency call, find the following probabilities.
A) the response time is between 13.5 and 13.5 minutes.
Keep your answer in 4 decimal places.
B) the response time is 4.9 to 13.1 minutes.
Keep your answer in 4 decimal places.
C) the response time is anywhere from 8.7 to less than 10.4 minutes.
Keep your answer in 4 decimal places.
D) the response time is anywhere greater than 10.9 to 11.8 minutes.
Keep your answer in 4 decimal places.
**Notes: DO NOT round any z-score.