Test: Practice Test 2 Submit Test This Question: 1 pt 12 of 26 This Test: 26 pts

Question

Test: Practice Test 2 Submit Test This Question: 1 pt 12 of 26 This Test: 26 pts possible time spent (in days) waiting for a heart transplant in two states for patients with type A blood can be approximated by a normal distribution, as shown in the graph to the right. Complete parts (a) and (b) below. = 21.4 Click to view page 1 of the table Click to view page 2 of the table 50 200 (a) What is the shortest time spent waiting for a heart that would still place a patient in the top 20% of waiting 07 times? days (Round to two decimal places as needed.) (b) What is the longest time spent waiting for a heart that would still place a patient in the bottom 1% of waiting times? Tays (Round to two decimal places as needed.) i 1.1. Vi |:/i!!..: (1,1)|. More Enter your answer in each of the answer boxes. Save for Later

Explanation / Answer

a) z score corresponding to top 20% area = 0.84

Hence,

Required time spent = 123 + 0.84*21.4 = 140.98 days

b) z score for botton 1% of area = -2.33

Hence,

Required time spent = 123 - 2.33*2.14 = 118.01 days

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