1. How many 4 digit numbers can be formed using the numbers: 1 - 7. Repeated numbers CAN NOT be used
2. The average gas mileage of the Honda CR-V is 26 miles per gallon. If the distribution of the gas mileage of the CR-V is approximately normal with a standard deviation of 4 miles per gallon.
a. Find the probability that a randomly selected CR-V has a gas mileage below 27 miles per gallon