Suppose IQ scores were obtained for

20

randomly selected sets of

twins.

The

20

pairs of measurements yield

x=101.55,

y=99.55,

r=0.859,

P-value=0.000,

and

y=3.8+0.94x,

where x represents the IQ score of the

twinbornsecond.

Find the best predicted value of

y

given that the

twinbornsecond

has an IQ of

90?

Use a significance level of 0.05.