Consider the following set of dependent and independent variables. Use these data to complete parts a and b below.  y 48 46 42 42 35 32 30 25 16 x1 78 66 80 52 42 46 30 15 13 x2 22 26 21 20 14 16 9 13 11 a) Construct a 95% confidence interval for the regression coefficient for x1 and interpret its meaning.  -The 95% confidence interval for the true population coefficient B1 is ____ to ____.  b) Construct a 99% confidence interval for the regression coefficient for x2 and interpret its meaning.  -The 99% confidence interval for the true population coefficient B2 is approximately from ___ to ___.

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