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Do Homework- mackenzie mcpherson-fair-Mozilla Firefox .ume a)a https://www.mathx.co Homeworkaspx?homeworkld-457955050&question;!d-2&fushe; Statistics Fall 2017. Thursdays Homework: Class 8:Section 6.5 Save b Homework es Score: 0 of 1 pt me 6.5.19 40t 5 (2 complete) HW Score: 20%, 1 of 5 pts Question Help An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 130 Ib 29.6 lb a. If a pilot is randomly selected, find the probability that his weight is between 130 Ib and 171 lb The probability is approximately (Round to four decimal places as needed ) Tests and 171 b. The new population of pilots has normally distributed weights with a mean of 135 ib and a standard deviation of an ok ch Content Succes ia Libra e Option Tutor Tools Enter your answer in the answer box and then click Check Answer ype here to search

Explanation / Answer

Mean is 135 and standard deviation s is 29.6. z is given as (x-mean)/s

P(130<x<171)=P((130-135)/29.6<z<(171-135)/29.6)=P(-0.17<z<1.22) or P(z<1.22)-(1-P(z<0.17)) . from normal distribution table we get 0.8888-(1-0.5675)=0.4563

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