The patient recovery time from a particular surgical procedure is normally distr

Question

The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.1 days and standard deviation of 1.8 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? o What is the probability of spending between 5 days and 7 days in recovery? Box 1: Enter your answer as an integer or decimal number. Examples: 3,-4, 5.5172 Enter DNE for Does Not Exist, oo for Infinity Box 2: Enter your answer as an integer or decimal number. Examples: 3,-4, 5.5172 Enter DNE for Does Not Exist, oo for Infinity Box 3: Enter your answer as an integer or decimal number. Examples: 3,-4, 5.5172 Enter DNE for Does Not Exist, oo for Infinity

Explanation / Answer

a) P(X<7)=P(Z<(7-5.1)1.8)=P(Z<1.06)=85.4% ( please try 85.5% if this comes wrong)

b)P(X>5)=P(Z>(5-5.1)/1.8)=P(Z>-0.06)=52.2%( please try 52.4% if this comes wrong)

c)P(5<X<7)=P(-0.06<Z<1.06)=37.7%( please try 37.9% if this comes wrong)

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