Suppose that the speed at which cars go on the freeway is normally distributed with mean 79 mph and standard deviation 10 miles per hour. Let X be the speed for a randomly selected car. a. What is the...

Extracted text: Suppose that the speed at which cars go on the freeway is normally distributed with mean 79 mph and standard deviation 10 miles per hour. Let X be the speed for a randomly selected car. a. What is the distribution of X? X - N( b. If one car is randomly chosen, find the probability that it is traveling more than 80 mph. Round to 4 decumal places. c. If one of the cars is randomly chosen, find the probability that it is traveling between 80 and 83 mph. Round to 4 decimal places.


Extracted text: The percent of fat calories that a person in America consumes each day is normally distributed with a mean of about 37 and a standard deviation of 10. Suppose that one individual is randomly chosen. Let X-percent of fat calories. a. What is the distribution of X? X - N( b. Find the probability that a randomly selected fat calorie percent is more than 35. Round to 4 decimal places. c. Find the minimum number for the lower quartile of fat calories. Round to 2 decimal places.