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Statistics Homework Solutions 177

# Statistics Homework Solutions 177 - 177 SECTION 7.4 ย 0...

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Unformatted text preview: 177 SECTION 7.4 ยก 0 1119 500 ยกยฅ ยค ยจ ยข 106 11 162 06. ยจ ยจ (b) y ยก (c) Below. For values of x near 500, there are more points below the least squares estimate than above it. (d) There is a greater amount of vertical spread on the right side of the plot than on the left. Section 7.4 0 79833ln x ยข ยก ยก ยข 231 76. ยก ยข ยก ยก ยก ยก ยข 0 4442 0 79833 ln1600 ยข eln y 330 95. ยข ยก ยก ยก (c) y ยก e 0 4442 0 79833 ln2500 e ยจ ยจ eln y (b) y ยจ ยข 0 4442 ยจ 1. (a) ln y ยก (d) The 95% prediction interval for ln y is given as (3.9738, 6.9176). The 95% prediction interval for y is therefore e3 9738 e6 9176 , or (53.19, 1009.89).  ยค 1 269x ยจ ยข 20 162 ยฅ ยจ ยก 3. (a) y 15 (b) Residual 10 There is no apparent pattern to the residual plot. The linear model looks ๏ฌne. 5 0 โ5 โ10 50 55 60 65 Fitted Value 70 75 ...
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