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Suppose that the speed at which cars go on the freeway is normally distributed with mean 74 mph and standard deviation 5
Posted: Sun Sep 05, 2021 5:19 pm
by answerhappygod
- Suppose That The Speed At Which Cars Go On The Freeway Is Normally Distributed With Mean 74 Mph And Standard Deviation 5 1 (117.72 KiB) Viewed 321 times
Suppose that the speed at which cars go on the freeway is normally distributed with mean 74 mph and standard deviation 5 miles per hour. Let X be the speed for a randomly selected car. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X N NO b. If one car is randomly chosen, find the probability that it is traveling more than 76 mph. c. If one of the cars is randomly chosen, find the probability that it is traveling between 77 and 83 mph. d. 89% of all cars travel at least how fast on the freeway? mph.