Answer:
Step-by-step explanation:
Given, :
x P(x)
0 0.900
1 0.09
2 0.007
3 0.003
The expected variance ; Var(X) = x²*p(x) - E(X)²
The expected mean, E(X) = x*p(x)
E(X) = (0*0.9) + (1*0.09) + (2*0.007) + (2*0.003) = 0.113
Var(X) = [(0^2*0.9) + (1^2*0.09) + (2^2*0.007) + (3^2*0.003)] - 0.113^2
Var(X) = 0.145 - 0.012769
Var(X) = 0.132
Answer:16
Step-by-step explanation:
In order to get 1/4th of the sugar:
(1/3)*(1/4)=1/12 cups of sugar
Answer:
Step-by-step explanation:
4x+4=3x-6
subtract 4 from both sides
4x=3x-10
subtract 3x from both sides
x=-10
Answer:
c- Jenika has the cashier run her debit card as a credit purchase, rather than debit, to avoid having to enter her PIN.
Step-by-step explanation: