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Nagy_BUS207.920_Ch13

Nagy_BUS207.920_Ch13 - r 2 = 0.499 H p 0 H 1 p&gt 0...

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Chris Nagy BUS207.920 11/4/2007 Chapter 13, pages 499 - 506 #37 - 61 EOO
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37 t = 13.213 41 a Year 1950 6.0 50.2 b 1955 7.8 50.4 c 1960 7.3 44.0 1965 10.3 49.9 1970 10.1 39.5 d 1975 10.8 43.1 1980 11.5 44.0 1985 15.4 40.1 1990 13.5 36.0 1995 15.5 31.7 2000 17.4 28.6 2005 17.1 27.8 The relationship is inverse 45 a Person Rupple 12 4 b Hall 2 10 c Bennett 6 8 Longnecker 9 5 Phillips 7 5 Massa 2 8 Sass 8 3 Karl 4 8 Malrooney 10 2 Veights 5 5 There is an iverse relationship between the variables. 49 a b= -0.4667 a= 11.2358 b c d Almost 50% of the variation in amount of the bid is explained by the number of bidders 53 a b= 2.41 a= 26.8 regression equation is Price = 26.8 + 2.41 * Dividend. For each additional dollar of dividends b r2= 5057.6/7682.7 = 0.658 65.8% of price variation is explained by the dividend c r= 0.881 at 5% level, reject H0 if t > 1.701 t=7.34 57 a H 0 : p≤ 0 H 1 : p > 0 reject H 0 if t > 1.714 Reject H 0 Cars Sold (Millions) Percent GM Months Owned Hours Exercised Ŷ= 11.2358 - 0.4667(7.0) = 7.9689 7.9689 ± (2.160)(1.114)*√[1+ 1/15 + (7-7.1333) 2 /73.7333] = 7.9689 ± 2.4854= [5.4836, 10.4543]
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Unformatted text preview: r 2 = 0.499 H : p 0 H 1 : p > 0 Reject H = -1031.0 + 1877.3X r 2 = .697 2 4 6 8 10 12 14 2 4 6 8 10 12 Months Hours 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 0.0 10.0 20.0 30.0 40.0 50.0 60.0 Percent Market Share Cars Sold b The second laptop (1.6, 1229) has residual value of -743.64, a noticeable "bargain price" c the correlation between speed and price is 0.835 t= 4.799 61 r= 0.374 level of significance = 0.05 t= 24.564 H : p 0 H 1 : p > 0 reject H if t > 1.812 Reject H H : p 0 H 1 : p > 0 reject H if t > 1.677 Reject H r= - 0.88368 t= -5.9699 R2= (-0.88368)2 = 0.781, or 78.1% r =-0.827 t= -4.16 s, the price will increase by another 2.41 H : p 0 H 1 : p < 0 reject H if t < -2.764 Reject H H : p 0 H 1 : p < 0 reject H if t < -2.896 Reject H ]...
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