MATH: statistic/ probalitity - need desperstely help with #7-9 (a-b&a-c) -Linear

Question

MATH: statistic/ probalitity
- need desperstely help with #7-9 (a-b&a-c)
-Linear Regression/ best fit line graph
- please explain/show steps/answer to the question

Extension: In a large study by Consumer Reports, the sugar in breakfast cereal was compared to the calories per serving. Armen was concerned about the percentage of sugar in his diet, so he created a model that related the sugar in cereal to calories: =-6.7 + 0.13 . a. What does a negative residual mean in this context? Is a cereal with a positive or negative residual better for Armen's diet? b. Interpret the meaning of the slope and y-intercept in the context of the problem. Does the y-intercept make sense in the context of the problem?

Explanation / Answer

Dear student, please post the question one at a time

7.9) a) The actual amount of the sugar is less than predicted by the model, negative is better

b) Slope=0.13, We predict an increase of one calorie will result in an increase of 0.13 grams of sugar

Y-intercept = - 6.7, A cereal with no calories will have negative grams of sugar. Again, the statistical model cannot be extrapolated.

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