14 pts 14of24 (12 complete) ? This Quiz: 250 pts possble The timve spent On days

Question

14 pts 14of24 (12 complete) ? This Quiz: 250 pts possble The timve spent On days) walting for a kidney tannglant for people a) What wailting time represents the 80th percentle? b) What walling time represents the first quartle? ges 35-49can be approximiated by the normal distribution, as shown in the figure to the tight be approxsimia 1579 1670 5778 Cick to view page 1 ot the Standaed Nomal Table a)The wal?glmethat represents the aon pence tie is?days Round to the nearest integer as needed) (b) The waling ime that represeets te first quaki?days Round to the nearest integer as needed) Enter your answer in each of the answer boxes

Explanation / Answer

Given mean = 1670

Sd = 207.4

a) for finding 80th percentile

P = 0.80

then by using Excel

X = norm.inv(p,mean,sd) = norm.inv(0.80,1670,207.4)

X = 1844.55

X = 1845(approx)

b) for finding first quartile we take p = 0.25

Then X = norm.inv(0.25,1670,207.4)

X = 1530.1108

X = 1530(approx)

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