The width of leaves on the plants in my office are normally distributed with a mean of 2.45 inches and a standard deviation of 0.5 inches. What is the probability that a randomly chosen leaf has a...

The width of leaves on the plants in my office are normally distributed with a mean of 2.45 inches and a standard deviation of 0.5 inches. What is the probability that a randomly chosen leaf has a width greater than 3.05 in? Suppose I pick 5 leaves from my plant. What is the probability that my sample has a mean width greater than 3.05 in?