Question

The following table, reproduced from Exercise 13.26, gives information on the amount of sugar (in grams) and the calorie count in one serving of a sample of 13 varieties of Kellogg’s cereal.
a. Find the correlation coefficient. Is its sign the same as that of b calculated in Exercise 13.26?
b. Test at a 1% significance level whether the linear correlation coefficient between the two variables listed in the table is positive.


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  • CreatedAugust 25, 2015
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