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Mathematics, 05.05.2020 16:46 brillamontijo
Step 1 of 3: Each year a nationally recognized publication conducts its Survey of America’s Best Graduate and Professional Schools. An academic advisor wants to predict the typical starting salary of a graduate at a top business school using GMAT score of the school as a predictor variable. A least-squares regression line of SALARY versus GMAT is y = -92040 + 228x, and the correlation, r, is 0.81. If the sample size used to create the regression line is n=20, is r statistically significant at a 0.05 level?
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