(b) Find a 95% interval estimate for the coefficient attached to PTRATIO. State the meaning of this interval estimate.
ptratio -1.232310475 -0.68329754
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 .
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