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The mean amount of time it takes a kidney stone to pass is 15 days and...

The mean amount of time it takes a kidney stone to pass is 15 days and the standard deviation is 5 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 13 days to pass it. Round to 4 decimal places.__________

Math   Statistics-And-Probability   
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