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Suppose IQ scores were obtained from randomly selected couples. For 20 such pairs of people, the linear correlation coefficient is 0.932 and the...
Suppose IQ scores were obtained from randomly selected couples. For 20 such pairs of people, the linear correlation coefficient is 0.932 and the equation of the regression line is y=−16.91+1.2x, where x represents the IQ score of the wife. Also, the 20 x values have a mean of 100.87 and the 20 y values have a mean of 103.95. What is the best predicted IQ of the husband, given that the wife has an IQ of 90? Use a significance level of 0.05.