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# HW#4 - Homework#4 Due Mon 9/18/6 ActivStats b1 quantitative...

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Homework #4 Due Mon, 9/18/6 ActivStats: b1) quantitative, measured on the same cases, direction, form, linear, strength b2) negative, linear, moderate b3) null, linear, weak b4) positive, linear, strong b5) positive, bent, moderate c) Correlation = -0.85 d) association, linear, outliers, sign, magnitude, 1.0, units Ch.4 Problems: 3a) see attached 3b) 2 2 0 .09375(4 ) 0.5 x x x dx = = - = 3c) 1 2 1 .09375(4 ) 0.6875 x x x dx = =- - = 9a) 6 .15( .5) .5 .15 0.562 x x x e dx = - - = = 9b) .15( .5) 6 .15 0.438 x x x e dx = - - = = 9c) 6 .15( .5) 5 .15 0.071 x x x e dx = - - = =

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15a) s ee attached for graphs… 8 9 0 9 ( ) 90 (1 ) (9 10) 0 0 ( ) (9 10) 0 1 0 1 x F x y y dy x x x F x x x x x = - = - - < = - -≠♠ < 15b) 9 (.5) (.5) (9(.5) 10) 0.0107 F = - - = 15c) 9 9 (.25 .5) (.5) (.25) 0.0107 (.25) (9(.25) 10) 0.0107 (.25 .5) (.5) (.25) 0.0107 (.25) (9(.25) 10) 0.0107 P X F F P X F F < = - = - - = = - = - - = 15d) see attached 15e) 1 8 0 1 2 8 0 90 (1 ) 0.818 ( 0.818) 90 (1 ) 0.111 X X x x x dx x x x dx μ σ = - = = - - = ° ° 21) 11 2 9 2 2 3 [1 (10 ) ] 10 4 ( ) (10) 314.16 X X x x dx A μ π μ π = - - = = = = 23) 1.8(120) 32 248 1.8(2) 3.60 μ σ = + = = = 26a) 0.9850 - 0.5 = 0.485 26b) 0.8413 – 0.5 = 0.3413 27a) 2.14 27b) 0.291 + 0.5 = 0.791 corresponds to 0.81 27d) 0.668/2 + 0.5 = 0.834 corresponds to 0.97 29b) 1.34 32a) .25 .3 1 1 ( .833) 1 .203 .797 .06 - - Φ = - Φ - = - = 32b) .1 .3 ( 3.33) 0.0004 .06 - Φ = Φ - =
55a) (6-1)! = 120 55b) 5 1 2 0 1.329 x x e dx x - - = 56a) .238 56b) .238

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HW#4 - Homework#4 Due Mon 9/18/6 ActivStats b1 quantitative...

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