a)Find the best predicted value of y given that x=1. The given statistics are summarized from paired sample data:

r=0.989, n=50, the equation of the regression line is y=3+4x, and the mean value of y's is 5.

b)Find the best predicted value of y given that x=1. The given statistics are summarized from paired sample data:

r=0.0121, n=50, the equation of the regression line is y=3+4x, and the mean value of y's is 5.

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