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Mathematics, 14.11.2019 05:31, babra
3. lighthouses are constructed to guide ships travelling in rocky waters and to allow sailing at night. there are many ways to report the size of a lighthouse. however, the height is usually measured from the base of the tower to the top of the ventilator ball. to predict the mean height of all lighthouses in france, we look to randomly select a sample of lighthouses in france. assume the standard deviation of the size of lighthouses is 8 meters. how large a sample is necessary to ensure that the confidence level is 95% and that the estimated mean height of lighthouses does not differ from the true mean height by more than 1 meter?
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Mathematics, 21.06.2019 14:00, ASTROBOY1
Do graduates from uf tend to have a higher income than students at fsu, five years after graduation? a random sample of 100 graduates was taken from both schools. let muf be the population mean salary at uf and let mufsu be the population mean salary at fsu. how should we write the alternative hypothesis?
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Mathematics, 21.06.2019 22:30, jadeochoa4466
Aflagpole broke in a storm. it was originally 8 1 81 feet tall. 2 8 28 feet are still sticking straight out of the ground, where it snapped, but the remaining piece has hinged over and touches the ground some distance away. how far away is the end of the pole from the base of the pole along the ground?
Answers: 1
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