The following table, reproduced from Exercise 13.26, gives information on the amount of sugar (in grams) and
Question:
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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Sugar (grams) 45 12 Calories 8 6 7 2 74 20 3 13 120 200 40 110 120 80 190 100 120 190 190 10 120
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