A sample of 84 cars from an online information service was examined to see how f

Question

A sample of 84 cars from an online information service was examined to see how fuel efficiency (as highway mpg) relates to the cost (manufacturer's suggested retail price in dollars) of cars. Scatterplots and computer outputs are provided in the accompanying table. Complete parts a) through ej below. -Click the icon to view the scatterplots and computer output a) State what a researcher would want to know, identify the variables, and give the appropriate hypotheses What would a researcher want to know? nOA. If Highway MPG causes Price to go up O B. If Price causes Highway MPG to go down ° C. If there is a linear association between Price and Highway MPG in cars O D. If Price causes Highway MPG to go up ee sc o E. If Highway MPG causes Price to go down

Explanation / Answer

A)

Ans is c. Scatter plot only tells about association not causality.

Variables:

1. Highway residuals

2. Highway predicted

3. Price

4. Highway MPG

Hypothesis:

H0: 1=0

Ha: 1 0

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