1 o. In the study of salt consumption and blood pressure (among 35 test subjects

Question

1 o. In the study of salt consumption and blood pressure (among 35 test subjects, with a sample correlation coefficient of re.42), for the two-sided hypothesis that the correlation is different from zero using -05, the critical value is: a. 2.032 b. 1.692 c. 2.035 d. 1.960 e. None of the above A regression analysis of the relationship between household the X variable) and expenditures on rent (in thousands of dollars, the Y variable) for a sample size of N = 16 gives the equation: income (measured in thousands of dollars, Ys-1.2 + .035 X, R: 0.7214 11. From the regression analysis, at a predicted income level of X 40, what is the predicted value of Y a. 1.2 b. 2.6 c. 15.2 d. 28.9 e. None of the above

Explanation / Answer

Q 10 The critical value of t for 33 df is 2.035

Answer: option C) is correct

Q 11

When X = 40

Predicted value of Y = 1.2+.035*40 =1.2+1.4 =2.6

Answer: Option b) is correct

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