Mathematics, 08.04.2020 00:46 joho38
Do students from UF tend to spend less time texting than students at FSU? A random sample of 100 students was taken from both schools. Let muf be the population mean number of text messages sent per day at UF and let mufsu be the population mean number of text messages sent per day at FSU. How should we write the alternative hypothesis?A. Ha: mufsu - muf = 0 B. Ha: mufsu - muf > 0 C. Ha: mufsu - muf < 0 D. Ha: mufsu - muf does not equal 0
Answers: 2
Mathematics, 21.06.2019 19:40
Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.
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Mathematics, 21.06.2019 20:00
The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?
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Mathematics, 21.06.2019 22:00
How many ordered pairs of positive integers satisfy xy=32?
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Do students from UF tend to spend less time texting than students at FSU? A random sample of 100 stu...
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