A researcher decides to investigate his students' suspicions that longer essays receive better scores on the...
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A researcher decides to investigate his students' suspicions that longer essays receive better scores on the SAT exam. He gathers data on the length of essays (number of lines) and the SAT scores received for a sample of students enrolled at his university. Based on his regression results, the 95% confidence interval for the slope of the regression equation is - 0.88 to 1.34. At a = 0.05, what can be conchuded? The slope of the regression equation is not significantly different from zero. The correlation between length of essays and SAT score is significant. The relationship between length of essays and SAT scores is significant and negative. The slope of the regression equation is significantly different from zero. There is a statistically significant association between length of essays and SAT score. A researcher decides to investigate his students' suspicions that longer essays receive better scores on the SAT exam. He gathers data on the length of essays (number of lines) and the SAT scores received for a sample of students enrolled at his university. Based on his regression results, the 95% confidence interval for the slope of the regression equation is - 0.88 to 1.34. At a = 0.05, what can be conchuded? The slope of the regression equation is not significantly different from zero. The correlation between length of essays and SAT score is significant. The relationship between length of essays and SAT scores is significant and negative. The slope of the regression equation is significantly different from zero. There is a statistically significant association between length of essays and SAT score.
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