Solution for QID #1569: The healing time for a certain type of incision is normally | StudyHelpMe

Subject: Statistics
Status: Made to Order
The healing time for a certain type of incision is normally distributed with a mean of 240 hours and a standard deviation of 20 hours a) what is he probability that the healing time for a randomly selected patient will exceed 255 hrs? b) what is the probability that the healing time for a randomly selected patient will be exactly 240 hours c) 90% of persons with this type of incision will require less than what amount of time to heal?
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