The time spent (in days) waiting for a heart transplant for people ages 35-49 ca

Question

The time spent (in days) waiting for a heart transplant for people ages 35-49 can be approximiated by the normal distribution, as shown in the figure to the right. (a) What waiting time represents the 5th percentile? (b) What waiting time represents the third quartile? 5E = 208 = 25.6 108 208 308 Days Click to view page 1 of the Standard Normal Table. Click to view page 2 of the Standard Normal Table. (a) The waiting time that represents the 5th percentile is days. (Round to the nearest integer as needed.) (b) The waiting time that represents the third quartile is days. (Round to the nearest integer as needed.)

Explanation / Answer

a) for 5th percentile ; z score =-1.6449

hence waiting time =mean +z*Std deviation =~ 166

b)

for 3rd quartile ; z=0.6745

waiting time =mean +z*Std deviation =~ 225

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