Question 9 (3 points) An important characteristic for the production of widgets is length. The process is known to yield an average length equal to 2.5 and a standard deviation of 1.2. Assume that a random length measurement comes from a normal distribution. Which of the following is true? Median = 1.44 Median = 6.25 Median = 2.5 O Median = 1.2 Question 10 (3 points) An important characteristic for the production of widgets is length. The process is known to yield an average length equal to 2.5 and a standard deviation of 1.2. Assume that a random length measurement comes from a normal distribution. 68% of the data within what range? Not enough information is given (0.1,4.9) O (-1.1,6.1) O (1.3,3.7) Question 11 (3 points) An important characteristic for the production of widgets is length. The process is known to yield an average length equal to 2.5 and a standard deviation of 1.2. Assume that a random length measurement comes from a normal distribution. The customer will be unhappy if the widget has an average length beyond 3.7. What is the probability that the customer will be happy? 0.1587 0.8413 0.5000 0.6826