Mathematics, 03.07.2020 16:01 puppylover72
Connecticut families were asked how much they spent weekly on groceries. Using the following data, construct and interpret a 95% confidence interval for the population mean amount spent on groceries (in dollars) by Connecticut families. Assume the data come from a normal distribution 210 23 350 112 27 175 275 50 95 450
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Mathematics, 21.06.2019 16:00
Find the solution set of this inequality. select the correct graph. |8x+16|> 16
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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.
Answers: 3
Connecticut families were asked how much they spent weekly on groceries. Using the following data, c...
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