Mathematics, 15.07.2019 17:20 Bryson2148
An engineer is going to redesign an ejection seat for an airplane. the seat was designed for pilots weighing between 130 lb and 171 lb. the new population of pilots has normally distributed weights with a mean of 140 lb and a standard deviation of 29.7 lb. a. if a pilot is randomly selected, find the probability that his weight is between 130 lb and 171 lb. the probability is approximately 0.4839. (round to four decimal places as needed.) b. if 32 different pilots are randomly selected, find the probability that their mean weight is between 130 lb and 171 lb. the probability is approximately 0.9712. (round to four decimal places as needed.) c. when redesigning the ejection seat, which probability is more relevant? a. part (b) because the seat performance for a sample of pilots is more important. b. part (a) because the seat performance for a single pilot is more important. c. part (a) because the seat performance for a sample of pilots is more important. d. part (b) because the seat performance for a single pilot is more important.
Answers: 3
Mathematics, 21.06.2019 17:30
Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents
Answers: 1
Mathematics, 21.06.2019 18:30
Anormally distributed data set has a mean of 176.3 and a standard deviation of 4.2. what is the approximate z-score for the data value of 167.9? 2.00 β2.00 8.4 β8.4
Answers: 2
Mathematics, 21.06.2019 20:00
In one day there are too high tides into low tides and equally spaced intervals the high tide is observed to be 6 feet above the average sea level after six hours passed a low tide occurs at 6 feet below the average sea level in this task you will model this occurrence using a trigonometric function by using x as a measurement of time assume the first high tide occurs at x=0. a. what are the independent and dependent variables? b. determine these key features of the function that models the tide: 1.amplitude 2.period 3.frequency 4.midline 5.vertical shift 6.phase shift c. create a trigonometric function that models the ocean tide for a period of 12 hours. d.what is the height of the tide after 93 hours?
Answers: 1
Mathematics, 21.06.2019 21:00
Gabriel determined that his total cost would be represented by 2.5x + 2y β 2. his sister states that the expression should be x + x + 0.5x + y + y β 2. who is correct? explain.
Answers: 2
An engineer is going to redesign an ejection seat for an airplane. the seat was designed for pilots...
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