Question

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 8.9 minutes and a standard deviation of 1.4 minutes. For a randomly received emergency call, find the following probabilities.

A) the response time is between 3.3 and 5.7 minutes.
Keep your answer in 4 decimal places.


B) the response time is 7.2 to 9.1 minutes.
Keep your answer in 4 decimal places.


C) the response time is anywhere from 14.3 to less than 15.1 minutes.
Keep your answer in 4 decimal places.


D) the response time is anywhere greater than 11.4 to 11.5 minutes.
Keep your answer in 4 decimal places.

Answer 1