(All Steps) Martin Motors has in stock three cars of the same make and model. The president would like to compare the gas consumption of the three cars


Question: Martin Motors has in stock three cars of the same make and model. The president would like to compare the gas consumption of the three cars (labeled car AA, car BB, and car CC using four different types of gasoline. For each trial, a gallon of gasoline was added tt an empty tank, and the car was driven until it ran out of gas. The following table show the number of miles driven in each trial.

Using the .05 level of significance:

  1. Is there a difference among types of gasoline?
  2. Is there a difference in the cars?

Solution:

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