Problems 7 and 8

7. Assume that a car's gas mileage (mpg) has a normal distribution with a mean of 30 mpg and a standard deviation of 4 mpg. Find the probability that the sample mean is up to 31 mpg after 36 samples are taken. {3 pts} 50 -. 100/ 0/ / 8. Annual snowfall in Big Bear City is normally distributed with mean of 58 inches, and standard deviation of 10 inches. What is the probability that a sample mean annual snowfall from 25 randomly selected years will be more than 62 inches? (3 Pts} -1E'i'l f\" :qu