The lengths of lumber a machine cuts are normally distributed with a mean of 101 inches and a standard deviation of Question list K 0.7 inch. (a) What is the probability that a randomly selected board cut by the machine has a length greater than 101.24 inches? (b) A sample of 37 boards is randomly selected. What is the probability that their mean length is greater than 101.24 inches? O Question 8 . . . O Question 9 (a) The probability is. (Round to four decimal places as needed.) O Question 10 (b) The probability is. (Round to four decimal places as needed.) O Question 11 O Question 12 O Question 13