Use the Following Information for Following Questions

Multiple Choice

Use the following information for following questions . A police radar gun is used to measure the speeds of cars on a
highway. The speeds of cars are normally distributed with a mean of 55 mi/hr and a standard deviation of 5
mi/hr.
-Roughly what proportion of cars are driving between 60 and 70 mi/hr? Round to the nearest thousandth)

A) 0.157
B) 0.843
C) 0.314
D) 0.628