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The patient recovery time from a particular surgical procedure is normally distributed with a mean of...

The patient recovery time from a particular surgical procedure is normally distributed with a mean of 4 days and a standard deviation of 1.9 days. Let X be the recovery time for a randomly selected patient. Round all answers to 4 decimal places where possible.

a. What is the distribution of X? X ~ N(,)

b. What is the median recovery time?  days

c. What is the Z-score for a patient that took 6 days to recover?

d. What is the probability of spending more than 3.8 days in recovery?

e. What is the probability of spending between 5 and 5.8 days in recovery?

f. The 70th percentile for recovery times is  days.

Math   Statistics-And-Probability   
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