Mathematics, 16.03.2022 23:10 yeeeeeeeeeeet21
An airline is trying two new boarding procedures, Option 1 and Option 2, to load passengers onto their Long Beach (LGB) to San Francisco (SFO) flights. Since Option 1 has more automation, the airline suspects that the mean Option 1 loading time is less than the mean Option 2 loading time. To see if this is true, the airline selects a random sample of 230 flights from LGB to SFO using Option 1 and records their loading times. The sample mean is found to be 17.6 minutes, with a sample standard deviation of 18.4 minutes. They also select an independent random sample of 275 flights from LGB to SFO using Option 2 and record their loading times. The sample mean is found to be minutes, with a sample standard deviation of minutes. Since the sample sizes are quite large, it is assumed that the population standard deviation of the loading times using Option 1 and the loading times using Option 2 can be estimated to be the sample standard deviation values given above. At the level of significance, is there sufficient evidence to support the claim that the mean Option 1 loading time, , is less than the mean Option 2 loading time, , for the airline's flights from LGB to SFO? Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to at least three decimal places. (If necessary, consult a list of formulas.)
Answers: 2
Mathematics, 22.06.2019 01:30
Three students each examine the system of linear equations shown. 8x + 4y = 16 8x + 2y = 8 caleb says there is exactly one solution. jeremy says there is no solution. kim says there are infinitely many solutions. which student is correct? provide mathematical reasoning to support your answer. answer in complete sentences. : d
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Mathematics, 22.06.2019 04:00
How many four digit even numbers can be formed from digits 1,2,3,4,5 if repetition is allowed. how can solve this using permutation formula
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Mathematics, 22.06.2019 04:00
What is the answer to this problem? ignore the work. what is the correct answer?
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An airline is trying two new boarding procedures, Option 1 and Option 2, to load passengers onto the...
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