What is the relationship between the amount of fat and the number of calories in
ID: 3395187 • Letter: W
Question
What is the relationship between the amount of fat and the number of calories in a candy bar? Researchers obtained samples of 75 candy bars and measured the number of grams of fat and the number of calories in each bar. A linear-regression model will be fit to the data using least squares. Here is some output from a computer package (with some information hidden).
RSquare 0.651355
RSquare Adj 0.646579
Root Sq Mean Error 36.85632
Mean of Response 243.0267
Term Estimate Std Error t Ratio Prob> |t|
Intercept 139.30267 9.848763 14.14 <.0001*
Total fat g 8.7348787 0.748046 11.68 <.0001*
Suppose the researchers test the hypotheses H0: the slope of the least-squares regression line = 0 Ha: the slope of the least-squares regression line 0 The value of the t statistic for this test is:
a)0.237
b)14.14.
c)11.68.
Explanation / Answer
Answer : c. 11.68
The value of the t statistic for this test is: 11.68 Answer
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