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However it is reasonable to assume normality here

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Unformatted text preview: s method, therefore, the family- wise error is 0.05. (b) is not correct since MPG of European cars is not statistically smaller than that of American Cars. (c) is not correct since the model can still be useful even though normality assumption is not checked here. However, it is reasonable to assume normality here since MPG of cars should follow a normal distribution. (d) The degree of freedom should be 2 because it is one less than the number of levels. 3. (a) is correct by just plugging in the correct numbers. (b) is not correct because of the wrong sign in the last term. (c) We can’t tell unless a table of Tukey’s method or Benforrri’s...
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