8) Suppose you fit the quadratic model y = B. + B,X+B_X + € to a set of n = 20 data points and found R2-91, SSyy= 29.94,

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8 Suppose You Fit The Quadratic Model Y B B X B X To A Set Of N 20 Data Points And Found R2 91 Ssyy 29 94 1 (22.85 KiB) Viewed 62 times

8) Suppose you fit the quadratic model y = B. + B,X+B_X + € to a set of n = 20 data points and found R2-91, SSyy= 29.94, and SSE = 2.63. a) Is there sufficient evidence to indicate that the model contributes information for predicting y? Test using a =.05 b) What null and alternate hypotheses would you test to determine whether upward curvature exists? c) What null and alternate hypotheses would you test to determine whether downward curvature exists?