Answer:
Now we can find the second moment with this formula:
And replacing we got:
The variance would be given by:
![Var(X) =E(X^2) -[E(X)]^2 = 21.4 -[3.8]^2 = 6.96](https://tex.z-dn.net/?f=%20Var%28X%29%20%3DE%28X%5E2%29%20-%5BE%28X%29%5D%5E2%20%3D%2021.4%20-%5B3.8%5D%5E2%20%3D%206.96)
And the deviation would be:
Step-by-step explanation:
For this case we have the following distribution given:
X 1 2 7
P(X) 1/5 2/5 2/5
We need to begin finding the mean with this formula:
And replacing we got:
Now we can find the second moment with this formula:
And replacing we got:
The variance would be given by:
And the deviation would be:
The least common denominator is 70 because both 14 and 10 go into 70.
Simplify <span>-6(1+11b) using distributive property
-6 - 66b</span>
Answer:
A. 10 hours for 4 employees and 20 hours for 1 employee.
Step-by-step explanation:
Okay, let's get to it! :D
So first, we need to set up an equation.
We know there are 60 total hours split between 5 people, and we can assign the number of hours 4 of the employees get as x. We also know that one employee gets double the amount of hours, so they would get 2x. Now, let's put that into an equation :)
60 = 2x + 4x
Now we add the x's together so the equation looks like this:
60 = 6x
To find x, we have to get it alone, so now we divide 60 by 6.
X = 10
But we're not done yet. X is the amount the 4 employees have to work, but because one employee has double the hours, we double our x-value to get 20 hours for that one employee.
