Answer:
45
Step-by-step explanation:
Given that :
Voucher awarded (x) :
Repair = $50
Lose or destroy = $200
P(x):
Replacement voucher = 5%
Repair voucher = 10%
X ______ 50 ______ 200
P(x) ____ 0.1 _______ 0.05
Expected variance Var(X) :
ΣX²p(x) - E(x) ;
E(x) = Σx*p(x) = (50*0.1) + (200*0.05) = 15
ΣX²p(x) = Σ[(50^2 * 0. 1) + (200^2 * 0.05)] = 250 + 2000 = 2250
Var(X) = 2250 - 15^2 = 2025
Standard deviation = √Var(x)
Standard deviation = √2025
Standard deviation = $45
Answer:
1 solutuion
Step-by-step explanation:
write out the equation then distribute everything that's in the parenthesis to 1/2 also combine like term on the other side of the equation. left with 5x+15-3/2=5x+6 . do 15-3/2 u get 13.5. subtract 6 on both sides left with 5x+7.7=5x. subtract 5x on both sides left with x=7.5
