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

Question

Suppose IQ soores were obtained from randomly selected couples. For 20 such pairs of people, the linear correlation coefficient is 0.863 and the equation of the regression line isy 817+0.91x, where x represents the la score of the wie. Also, the 20 x values have a mean of 96.66 and the 20 y values have a mean of 96.55. What is the best predicted IQ of the husband, gven that the wile has an 1Q of 957 Use a significance level of 0.05. The best predicted IQ of the husband is Round to two decimal places as needed)

Explanation / Answer

Since the value of correlation coefficient is statistically significant, we can use the regression equation to predict husband IQ.

For x = 95,

y = 8.17 + 0.91*95

y = 94.62

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