An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 140 Ib and 191 lb. The new population of pilots has normally distributed weights with a mean of 150 lb and a standant deve of 34.3 lb. Click here to view page 1 of the standard normal distribution. Click here to view page 2 of the standard normal distribution, a. If a pilot is randomly selected, find the probability that his weight is between 140 Ib and 191 lb, The probability is approximately (Round to four decimal places as needed.) b. If 39 different pilots are randomly selected, find the probability thantheir mean weight is between 140 Ib and 191 lb. The probability is approximately. (Round to four decimal places as needed.) c. When redesigning the ejection seat, which probability is more relevant? O A. Part (b) because the seat performance for a sample pilots is more important. O B. Part (a) because the seat performance for a sample of pilots is more important. O C. Part (b) because the seat performance for a single pilot is more important. O D. Part (a) because the seat performance for a single pilot is more important.
An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 140 Ib and 191 lb. The new population of pilots has normally distributed weights with a mean of 150 lb and a standant deve of 34.3 lb. Click here to view page 1 of the standard normal distribution. Click here to view page 2 of the standard normal distribution, a. If a pilot is randomly selected, find the probability that his weight is between 140 Ib and 191 lb, The probability is approximately (Round to four decimal places as needed.) b. If 39 different pilots are randomly selected, find the probability thantheir mean weight is between 140 Ib and 191 lb. The probability is approximately. (Round to four decimal places as needed.) c. When redesigning the ejection seat, which probability is more relevant? O A. Part (b) because the seat performance for a sample pilots is more important. O B. Part (a) because the seat performance for a sample of pilots is more important. O C. Part (b) because the seat performance for a single pilot is more important. O D. Part (a) because the seat performance for a single pilot is more important.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Question
Transcribed Image Text:An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 140 lb and 191 Ib. The new population of pilots has normally distributed weights with a mean of 150 lb and a standard deviation
of 34.3 lb.
Click here to view page 1 of the standard normal distribution.
Click here to view page 2 of the standard normal distribution.
a. If a pilot is randomly selected, find the probability that his weight is between 140 lb and 191 lb.
The probability is approximately - (Round to four decimal places as needed.)
b. If 39 different pilots are randomly selected, find the probability thantheir mean weight is between 140 lb and 191 lb.
The probability is approximately . (Round to four decimal places as needed.)
c. When redesigning the ejection seat, which probability is more relevant?
O A. Part (b) because the seat performance for a sample of pilots is more important.
O B. Part (a) because the seat performance for a sample of pilots is more importan
O C. Part (b) because the seat performance for a single pilot is more important.
O D. Part (a) because the seat performance for a single pilot is more important.
Click to select your answer(s).
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