Suppose IQ scores were obtained from randomly selected couples. For 20 such pair

Question

Suppose IQ scores were obtained from randomly selected couples. For 20 such pairs of people, the linear correlation coefficient is 0.872 and the equation of the regression line is

Modifying Above y with caret equals negative 6.24 plus 1.05 xy=6.24+1.05x, where x represents the IQ score of the husband. Also, the 20 x values have a mean of 102.75 and the

20 y values have a mean of 101.6. What is the best predicted IQ of the wife, given that the husband has an IQ of 108? Use a significance level of 0.05.

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Click the icon to view the critical values of the Pearson correlation coefficient r.

The best predicted IQ of the wife is nothing.

(Round to two decimal places as needed.)

Explanation / Answer

The regression equation is y = -6.24 + 1.05x

x = 108

y = -6.24 + 1.05(108) = 107.16

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