Question: The U S government s Cash for Clunkers program encouraged individuals to
The U.S. government's "Cash for Clunkers" program encouraged individuals to trade in their old gas-guzzlers for new, more efficient vehicles. At α = .05, do the data below sup- port the hypothesis that the gain in mpg was more than 5 mpg? The null hypothesis is H0 : µd ≤ 5 mpg.
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