Mathematics, 04.12.2019 01:31 cmflores3245
Some manufacturers claim that non-hybrid sedan cars have a lower mean miles-per-gallon (mpg) than hybrid ones. suppose that consumers test 21 hybrid sedans and get a mean of 32 mpg with a standard deviation of 8 mpg. thirty-one non-hybrid sedans get a mean of 21 mpg with a standard deviation of three mpg. suppose that the population standard deviations are known to be six and three, respectively. conduct a hypothesis test at the 5% level to evaluate the manufacturers claim.
Answers: 1
Mathematics, 21.06.2019 18:00
Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.
Answers: 1
Mathematics, 21.06.2019 22:00
5. (03.02)if g(x) = x2 + 3, find g(4). (2 points)1619811
Answers: 1
Mathematics, 22.06.2019 02:00
Landon drove 103.5 miles on tuesday 320.75 miles on wednesday and 186.30 miles on thursday for work his company pays 0.07 $ for each mile he drives he expects to be paid more than $40,000 is he correct explain
Answers: 3
Some manufacturers claim that non-hybrid sedan cars have a lower mean miles-per-gallon (mpg) than hy...
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