6-2 Part 2 Warm Up Quiz
1. The speeds of cars are measured using a radar unit, on a freeway. The speeds are
normally distributed with a mean of 60 mi/hr and a standard deviation of 5 mi/hr.
a. What is the probability that a car selected at chance is moving at more than
70mi/hr?
b. If you are traveling 80 mi/hr on the freeway, explain if you are traveling at a
significantly high speed. Why?
