The patient recovery time for a surgical procedure is normally distributed with a mean of 5.3 days and a standard deviation of 2.1 days. What is the probability a recovery time takes between 5 and 9

The patient recovery time for a surgical procedure is normally distributed with a mean of 5.3 days and a standard deviation of 2.1 days.  What is the probability a recovery time takes between 5 and 9 days?  Give your answer to 4 decimal places.

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