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Question 36 Incorrect 0 / 2 pts Skip to question text. In a study designed to predict blood cholesterol levels from amount of daily saturated fat in grams (X1) and number of hours of daily exercise (X2), we determine that the slope of X1 is 5, the slope of X2 is –4, and the y intercept is 130. If someone reports that they typically eat 10 grams of saturated fat daily and exercise 1 hour daily, what would you predict for the person's cholesterol level? 184 150 176
Question 37 Correct! 2 / 2 pts Which of the following statistics quantifies the improvement in ability to predict a person's score when using the regression line rather than the mean?<br>
Which of the following statistics quantifies the improvement in ability to predict a person's score when using the regression line rather than the mean?
Question 38 Correct! 2 / 2 pts Why do correlation coefficients greater than 0.50 rarely occur in the social sciences?<br> Why do correlation coefficients greater than 0.50 rarely occur in the social sciences?
Question 39 Correct! 2 / 2 pts When conducting a hypothesis test for the Pearson correlation coefficient, we are testing the null hypothesis that our correlation value is significantly different from:<br> When conducting a hypothesis test for the Pearson correlation coefficient, we are testing the null hypothesis that our correlation value is significantly different from:
Question 40 Correct! 2 / 2 pts A Pearson correlation coefficient is calculated for 48 individuals. What value of df should be used to determine statistical significance in hypothesis testing?<br> A Pearson correlation coefficient is calculated for 48 individuals. What value of df should be used to determine statistical significance in hypothesis testing? 47 46 48
45 Question 41 Correct! 2 / 2 pts In the equation for a regression line, the intercept is the:<br> In the equation for a regression line, the intercept is the:
Question 42 Correct!