Aleks Quiz -...

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1. 14 33 8 7 12 11 = 2. alternating heads and tails (either coming first) =2/8=0.25 two or more heads = 4/8 = 1/2 = 0.5 3.P(A)= 36 15 P(B)= 9 5 36 20 = 4.a)continuous b)continuous
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c)discrete d)discrete 5.E(x)=20*0.05+30*0.05+40*0.55+50*0.30+60*0.05=1+1.5+22+15+3=42.5
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Unformatted text preview: Var(x)=(20-22.5)^2*f(20)+(30-22.5)^2*f(30)+(40-22.5)^2*f(40)+(50-22.5)^2*f(50)+(60-22.5)^2*f(60) =6.25*0.05+56.25*0.05+306.25*0.55+756.25*0.3+1406.25*0.05 =0.3125+2.8125+168.4375+226.875+70.3125 =468.75...
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