Question

a) draw the model for auto fuel economy. clearly label it, showing what the 68 - 95 - 99.7 rule predicts.

Explanation:

The 68 - 95 - 99.7 Rule (also known as the Empirical Rule) for a normal distribution states that approximately 68% of the data lies within 1 standard - deviation of the mean, 95% within 2 standard - deviations of the mean, and 99.7% within 3 standard - deviations of the mean. Without additional context about the mean and standard deviation of auto fuel economy, we assume the symmetry around a central value for the normal distribution model. We need to check which graph has the correct intervals labeled with 68%, 95%, and 99.7% symmetrically around the peak of the normal curve.

Answer:

(There is no way to determine a specific answer among A, B, C, D without knowing the mean and standard deviation values for auto fuel economy. But the correct graph should have the intervals symmetrically placed around the peak of the normal curve with the correct percentage labels as per the 68 - 95 - 99.7 Rule.)