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Mathematics, 30.03.2020 19:05, josephv80
An automobile manufacturer who wishes to advertise that one of its models achieves 30 mpg (miles per gallon) decides to carry out a fuel efficiency test. Six nonprofessional drivers were selected, and each one drove a car from Phoenix to Los Angeles. The resulting fuel efficiencies (in miles per gallon) are given below:
27.3 29.4 31.2 28.4 30.2 29.6
Assuming that fuel efficiency is normally distributed under these circumstances, do the data contradict the claim that true average fuel efficiency is (at least) 30 mpg? Test the appropriate hypotheses at significance level 0.05. (Use a statistical computer package to calculate the P-value. Round your test statistic to two decimal places and your P-value to three decimal places.)
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Jan and wayne went to the store to buy some groceries. jan bought 2 cans of corn beef hash and 3 cans of creamed chipped beef for $4.95. wayne bought 3 cans of corn beef hash and 2 cans of creamed chipped beef for $5.45. let h represent the price of a can of corn beef hash, and c represent the price of a can of creamed chipped beef. which system of equations models the word problem on the left? 3h + 2c = 4.95 2h + 3c = 5.45 2h + 2c = 4.95 3h + 3c = 5.45 2h + 3c = 4.95 3h + 2c = 5.45 3h + 3c = 5.45 2h + 2c = 4.95
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An automobile manufacturer who wishes to advertise that one of its models achieves 30 mpg (miles per...
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