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Question: the following data were collected during a study of consumer...

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The following data were collected during a study of consumer buying patterns:

Observation x y Observation x y
1 12 72 8 16 83
2 30 85 9 19 65
3 37 88 10 18 77
4 31 84 11 17 90
5 46 96 12 27 90
6 44 92 13 33 94
7 32 84


b. Obtain a linear regression line for the data.(Round your intermediate calculations and final answers to 3 decimal places.)

y = _________ + __________ x

c. What percentage of the variation is explained by the regression line? (Do not round intermediate calculations. Round your answer to the nearest whole percent. Omit the "%" sign in your response.)

Approximately __________% of the variation in the dependent variable is explained by the independent variable.

d. Use the equation determined in part b to predict the expected value of y for x = 49. (Round your intermediate calculations and final answers to 3 decimal places.)

y = _______________

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