Question

-/1.81 points IllowskylntroStat1 6.HW.068. The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.6 days and a standard deviation of 1.9 days. What is the probability of spending more than 4 days in recovery? (Round your answer to four decimal places.) Submit Answer 32

Answer 1

Solution :

Given that ,

mean = $\mu$ = 5.6

standard deviation = $\sigma$ = 1.9

P(x > 4) = 1 - P(x < 4)

= 1 - P((x - $\mu$ ) / $\sigma$ < (4 - 5.6) / 1.9)

= 1 - P(z < -0.84)

= 1 - 0.2005 Using standard normal table.

= 0.7995

Probability = 0.7995