Question

The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.8 days and a standard deviation of 1.5 days. What is the median recovery time?___ days.

(b) The patient recovery time from a particular surgical procedure is normally distributed with a mean of 3.5 days and a standard deviation of 2.2 days. What is the z-score for a patient who takes 7 days to recover? (Round your answer to two decimal places.)

Answer 1

Let X denotes the recovery time from a particular surgical procedure for a randomly selected patient.

So, The median recovery time = 5.8 days

b) Mean = 3.5

standard deviation = 2.2

The z-score for a patient who takes 7 days to recover

= (7 - mean) / standard deviation

= (7 - 3.5) / 2.2

= 1.59