Please check answers. Thanks For each menu item at a fast food restaurant, fat c

Question

Please check answers. Thanks

For each menu item at a fast food restaurant, fat content (in grams) and number of calories were recorded. A scatterplot of these data is given. A plausible value for the correlation between fat content and number of calories is: +0.20. +0.6. +0.9. -0.9. The regression equation below relates the scores students in an advanced statistics course received for homework completed and the subsequent midterm exam. Homework scores are based on assignments that preceded the exam. The maximum homework score a student could obtain was 500 and the maximum midterm score was 350. The regression line that was obtained is given by y = -84.4 + 91 x If a student had a homework score of 420, the midterm score would be predicted to be (rounded to an integer): 298. 336. None of the answer choices is correct. 378.

Explanation / Answer

We can see from the graph that the plot of fat vs calorie , is alomost linear ( which means that correlation is clost to 1 ) , and it also positive because of increase in calorie increase fat.

b )

.91*420 -84.4 = 298

just substitute in the regression equation to get this

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