E Quiz: MSL Quiz 6: Normal This quiz: 4 po Distribution (5.3, 5.4) Question 1 of 4 > This question: possible The lengths of lumber a machine cuts are normally distributed with a mean of 98 inches and a standard deviation of 0.6 inch. (a) What is the probability that a randomly selected board cut by the machine has a length greater than 98.19 inches? (b) A sample of 39 boards is randomly selected. What is the probability that their mean length is greater than 98.19 inches? (a) The probability is (Round to four decimal places as needed.) (b) The probability is (Round to four decimal places as needed.) Statcrunch