In the study of salt consumption and blood pressure (among 35 test subjects, wit

Question

In the study of salt consumption and blood pressure (among 35 test subjects, with a sample consumption and blood pressure (among 35 test subjects, with a sample correlation coefficient of r=.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 income (measured in thousands of dollars, the X variable) and expenditures on rent (in thousands of dollars, the Y variable) for a sample size of N 16 gives the equation: Y =-1.2 + .035 x, R2 = 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

10) Sample size = n = 35

r = 0.42

Degrees of freedom = n - 2 = 35 - 2 = 33

Level of significance = 0.05

Critical value = 2.035

11) X = 40

Predicted value of y is

Y = - 1.2 + 0.035*40 = 0.2

So correct option is e. None of the above

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