The mean amount of time it takes a kidney stone to pass is 15 days and the standard deviation is 6 days. Suppose that one individual is randomly chosen. Let X = time to pass the kidney stone. a. What...

Extracted text: The mean amount of time it takes a kidney stone to pass is 15 days and the standard deviation is 6 days. Suppose that one individual is randomly chosen. Let X = time to pass the kidney stone. a. What is the distribution of X? X - N( b. Find the probability that a randomly selected person with a kidney stone will take longer than 12 days to pass it. Round to 4 decimal places.