Mathematics, 15.07.2020 02:01 ceceshelby51631
An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 120 lb and 181 lb. The new population of pilots has normally distributed weights with a mean of 128 lb and a standard deviation of 32.4 lb.
a. If a pilot is randomly selected, find the probability that his weight is between 120 lb and 181 lb.
The probability is approximately __. (Round to four decimal places as needed.)
b. If 32 different pilots are randomly selected, find the probability that their mean weight is between 120 lb and 181 lb.
The probability is approximately __. (Round to four decimal places as needed.
c. When redesigning the ejection seat, which probability is more relevant?
A. because the seat performance for a single pilot is more important.
B. because the seat performance for a single pilot is more important.
C. because the seat performance for a sample of pilots is more important.
D. because the seat performance for a sample of pilots is more important.
Answers: 1
Mathematics, 21.06.2019 13:00
Determine the quotient and remainder when (6a3)+11a2-4a-9) is divided by (3a-2) express your answer in the form q(a) + r(a)/d(a)
Answers: 1
Mathematics, 21.06.2019 14:30
The amount of money, in dollars, in an account after t years is given by a = 1000(1.03)^t. the initial deposit into the account was $_^a0 and the interest rate was _a1% per year. only enter numbers in the boxes. do not include any commas or decimal points^t. the initial deposit into the account was $__^a0 and the interest rate is % per year.
Answers: 1
Mathematics, 21.06.2019 16:50
The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?
Answers: 1
Mathematics, 21.06.2019 18:30
It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?
Answers: 1
An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots...
History, 22.04.2020 08:55
History, 22.04.2020 08:55
Physics, 22.04.2020 08:55
Physics, 22.04.2020 08:55
English, 22.04.2020 08:55
Mathematics, 22.04.2020 08:55
Mathematics, 22.04.2020 08:56
Biology, 22.04.2020 08:56