Answer:
Mean of the binomial distribution μ= 6
Variance of the binomial distribution λ² = 4.2
Step-by-step explanation:
<u>Explanation:-</u>
The probability a Gallup poll showed that 30% of Americans are satisfied with the way things are going in the United States.
p = 30% = 0.3
q =1-p = 1- 0.3 =0.7
a sample of 20 Americans is selected as part of a study of the state of the nation
size of the sample 'n' =20
we will use binomial distribution
<u>mean</u>:-
Mean of Americans who are satisfied with the way things are going in the United States (μ) = np
μ= 20 X 0.3
μ= 6
<u>Variance</u>:-
Variance of Americans who are satisfied with the way things are going in the United States λ² = n p q = 20 X(0.3)(0.7)
λ² = 4.2
Cost = (3,500) * (1.04)^years
Cost = (3,500) * (1.04)^4
<span><span><span>Cost = (3,500) * 1.16985856
</span>
</span>
</span>
<span><span>Cost = </span>4,094.50</span>
Answer:
1(18 + 6)/4
Step-by-step explanation:
1(18 + 6)/4
PLEASE MARK ME AS BRAINLIEST!!!
Answer:
Step-by-step explanation:
We are given that the expression
We have to find the expression which is equivalent to given expression.
To find the equivalent expression we will combine like terms
Now, combine like terms we get
By using the property
Therefore, the expression we get
Now, taking common 2
Hence, the expression which is equivalent to given expression is given by
Answer:
28cm^2
Step-by-step explanation:
The first thing we will do is split this shape into three different rectangles. You can see how I split it up by looking at the picture attached to this answer.
You can see that we are missing a measurement at the bottom (I labeled it "x"). In order to find x, we just need to subtract 3cm from 5cm.
Doing this, we find that x = 2cm.
Now you just find the area of the three boxes and add them together.
The area of the box on the top right = 3*2 which = 6cm^2.
The area of the box on the bottom right is the same. 3*2=6cm^2
The area of the box on the left = 8*2 which = 16cm^2.
6 + 6 + 16 = 28cm^2