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 0.947 and the equation of the regression line is y = -4.24 +1.02x, where x represents the IQ score of the wife. Also, the 20 x values have a mean of 101.45 and the 20 y values have a mean of 99.4. What is the best predicted IQ of the husband, given that the wife has an IQ of 94? Use a significance level of 0.05.
( round to two decimals as needed)
(use the critical values of the Pearson correlation coefficient r)

Explanation / Answer

The best predicted IQ of the husband, given that the wife has an IQ of 94 is:

y=-4.24+1.02*94

=91.64

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