Question

(b) Find a 95% interval estimate for the coefficient attached to PTRATIO. State the meaning of this interval estimate.

ptratio      -1.232310475 -0.68329754

Answer 1

Find a 95% interval estimate for the coefficient attached to PTRATIO. State the meaning of this interval estimate.

ptratio      -1.232310475 -0.68329754

we can use Confidence interval and give result coefficient is significant or not . if interval does not include null ( 0 value ) then result is significant ow it is not .

here coefficient interval does not include null value hence it is significant at given level .

we can say that 95 % confident that estimate for the coefficient attached to PTRATIO is lies within   -1.232310475 to -0.68329754 interval .