Its 81 because 729 divided by 3 and divided by 3 again is 81
8/100 * 125 =
(125 * 8)/100 =
1000/100 =
10
$125 + $10 = $135
Answer: B. $135.00
Answer:

For the variance we need to calculate first the second moment given by:

And replacing we got:

And the variance is given by:
![\sigma^2 = E(X^2) - [E(X)]^2 = 3.334 -[1.456]^2 =1.21](https://tex.z-dn.net/?f=%20%5Csigma%5E2%20%3D%20E%28X%5E2%29%20-%20%5BE%28X%29%5D%5E2%20%3D%203.334%20-%5B1.456%5D%5E2%20%3D1.21)
And the deviation is:

Step-by-step explanation:
For thi case we have the following distribution given:
X 0 1 2 3 4 5
P(X) 0.207 0.367 0.227 0.162 0.036 0.001
For this case the expected value is given by:

And replacing we got:

For the variance we need to calculate first the second moment given by:

And replacing we got:

And the variance is given by:
![\sigma^2 = E(X^2) - [E(X)]^2 = 3.334 -[1.456]^2 =1.21](https://tex.z-dn.net/?f=%20%5Csigma%5E2%20%3D%20E%28X%5E2%29%20-%20%5BE%28X%29%5D%5E2%20%3D%203.334%20-%5B1.456%5D%5E2%20%3D1.21)
And the deviation is:
