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

ID: 3255635 • Letter: S

Question

Suppose IQ scores were obtained from randomly selected

couples.

For

such pairs of people, the linear correlation coefficient is

0.855

and the equation of the regression line is

ModifyingAbove y with caret equals 2.27 plus 0.96 xy=2.27+0.96x,

where x represents the IQ score of the

wife.

Also, the

x values have a mean of

99.52

and the

y values have a mean of

98.1.

What is the best predicted IQ of the

husband,

given that the

wife

has an IQ of

109?

Use a significance level of 0.05.

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

The best predicted IQ of the

husband is

(Round to two decimal places as needed.)

Snce the given correlation coefficient is significant, predicted value will be:

y = 2.27 + 0.96*109

y = 106.91

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