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Statistics Homework Solutions 192

# Statistics Homework Solutions 192 - 192 CHAPTER 8(b No The...

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192 CHAPTER 8 (b) No. The change in the predicted flash point due to a change in acetic acid concentration depends on the butyric acid concentration as well, because of the interaction between these two variables. (c) Yes. The predicted flash point will change by 1 3897 10 13 897 F. 15. (a) The residuals are the values e i y i y i for each i . They are shown in the following table. Fitted Value Residual x y y e y y 138 5390 5399 17819 9 17819 140 5610 5611 42732 1 42732 146 5670 5546 73182 123 26818 148 5140 5291 35236 151 35236 152 4480 4429 87200 50 12800 153 4130 4141 43494 11 43494 (b) SSE 6 i 1 e 2 i 40832 432, SST n i 1 y i y 2 1990600. (c) s 2 SSE n 3 13610 811 (d) R 2 1 SSE SST 0 979487 (e) F SSR 2 SSE 3 SST SSE 2 SSE 3 71 6257. There are 2 and 3 degrees of freedom.
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