solutions hw 1

solutions hw 1 - 1c 10 20 12 17 16 x = x n = 15 10 20 21 17...

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1 c 10 20 12 17 16 x‾ = ∑x ∕ n = 15 2 d 10 20 21 17 16 12 μ = ∑x ∕ N = 16 3 b 53 55 70 58 64 57 53 69 57 68 53 x‾ = ∑x ∕ n = 59.73 4 b 46.6 44.2 44.6 47.1 45.9 45.4 46.6 45.7 46.5 46.4 47.3 48.4 46.0 46.1 49.4 48.5 45.6 44.3 46.5 48.0 48.5 46.1 46.2 48.6 49.9 49.2 44.8 46.1 46.9 46.1 x‾ = ∑x ∕ n = 46.7 5 b Salary (x) Freq (F) x∙F Reltv F (W) x∙W $95,000 2 190,000 0.050 4,750 $82,000 3 246,000 0.075 6,150 $74,000 5 370,000 0.125 9,250 $58,000 8 464,000 0.200 11,600 $47,000 18 846,000 0.450 21,150 $40,000 4 160,000 0.100 4,000 40 2,276,000 x‾ = ∑x∙W = 56,900 n = ∑F = 40 x‾ = ∑x∙F ∕ n = 56,900 6 b Div Yld (Y) Amt Inv (A) Y∙A 1.68 48 81 3.92 52 204 2.41 20 48 4.02 45 181 1.98 38 75 0.24 20 5 2.10 25 53 0.00 16 0 264 646 x‾ = Total yield ∕ Total amount invested ∑Y∙A ∕ ∑A = 2.45 7 a Requirement Score Weight S∙W Homework 100 10% 10.0 Attendance 100 10% 10.0 Tests 80 45% 36.0 Final 76 35% 26.6 100% 82.6 x‾ = ∑S∙W = 82.6 8 c x x − x‾
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