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1. The final test and exam averages for 20 randomly selected students taking a course in engineering statistics and a course in operations research follo that the final averages are jointly normally distributed. Find the regression line relating the statistics final average to the OR final average. Statistics 86 75 69 75 90 OR 80 81 75 81 92 Statistics 94 83 86 71 65 OR 95 80 81 76 72 Statistics 84 71 62 90 83 OR 85 72 65 93 81 Statistics 75 71 76 84 97 OR 70 73 72 80 98

1. The final test and exam averages for 20 randomly selected students taking a course in engineering statistics and a course in operations research follo that the final averages are jointly normally distributed. Find the regression line relating the statistics final average to the OR final average. Statistics 86 75 69 75 90 OR 80 81 75 81 92 Statistics 94 83 86 71 65 OR 95 80 81 76 72 Statistics 84 71 62 90 83 OR 85 72 65 93 81 Statistics 75 71 76 84 97 OR 70 73 72 80 98

Algebra and Trigonometry (MindTap Course List)
Algebra and Trigonometry (MindTap Course List)
4th Edition
ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter1: Equations And Graphs
Section1.FOM: Focus On Modeling: Fitting Lines To Data
Problem 11P
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Solve the following statistical problems using correlation.

1. The final test and exam averages for 20 randomly selected students taking a course in engineering statistics and a course in operations research follow. Assume that the final averages are jointly normally distributed. Find the regression line relating the statistics final average to the OR final average. Statistics 86 75 69 75 90 OR 80 81 75 81 92 Statistics 94 83 86 71 65 OR 95 80 81 76 72 Statistics 84 71 62 90 83 OR 85 72 65 93 81 Statistics 75 71 76 84 97 OR 70 73 72 80 98 (c) Manually compute for the correlation coefficient.
Transcribed Image Text:1. The final test and exam averages for 20 randomly selected students taking a course in engineering statistics and a course in operations research follow. Assume that the final averages are jointly normally distributed. Find the regression line relating the statistics final average to the OR final average. Statistics 86 75 69 75 90 OR 80 81 75 81 92 Statistics 94 83 86 71 65 OR 95 80 81 76 72 Statistics 84 71 62 90 83 OR 85 72 65 93 81 Statistics 75 71 76 84 97 OR 70 73 72 80 98 (c) Manually compute for the correlation coefficient.
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