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Unformatted text preview: 2 S 2 /S xx = S 2 xy /S xx RSS/ ( n-2) = ( n-2) S 2 xy ( S yy-S 2 xy /S xx ) S xx = ( n-2) S 2 xy ( S yy S xx-S 2 xy ) , and dividing top and bottom by S yy S xx nishes the proof. c. From (11.3.33) if = 0 (equivalently = 0), then / ( S/ S xx ) = n-2 r/ 1-r 2 has a t n-2 distribution....
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- Spring '12