SOLUTION: The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.3 days and standard deviation of 1.7 days. Use your graphing calculator to a

Question 1150360: The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.3 days and standard deviation of 1.7 days. Use your graphing calculator to answer the following questions. Write your answers in percent form. Round your answers to the nearest tenth of a percent.
a) What is the probability of spending less than 7 days in recovery?
%
b) What is the probability of spending more than 5 days in recovery?
%
c) What is the probability of spending between 5 days and 7 days in recovery?
%

Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
z=(x-mean)/sd so first one is z< (7-5.3)/1.7 or z<1 or 0.8414 or 84.1%
second is z greater than (5-5.3)/1.7 or z>-.18 or probability 0.5714 or 57.1%
third is between z of -.18 and z of +1 with probability of 0.4128 or 41.3%
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