The expected number of a distribution is its mean.
- The expected number of Americans who are satisfied with the way things are going in the United States is 6
- The standard deviation of Americans who are satisfied with the way things are going in the United States is 2.05
The given parameters are:
<em />
<em> --- the proportion that are satisfied</em>
<em />
<em> --- the sample size</em>
<em />
<u>(a) The expected number that are satisfied</u>
This is calculated using:

So, we have:


The expected number of Americans who are satisfied with the way things are going in the United States is 6
<u>(b) The standard deviation of those that are satisfied</u>
This is calculated using:

So, we have:




The standard deviation of Americans who are satisfied with the way things are going in the United States is 2.05
Read more about expected value and standard deviations at:
brainly.com/question/17088771
Answer:
x=8
NR=5 units
BI=10 units
Step-by-step explanation:
In a rectangle BRIA
AN=5 units
NR=x-3
We have to solve for x , NR and BI.
We know that
Diagonals of rectangle bisect to each other.
BI and AR are the diagonals of rectangle BRIA and intersect at point N.
AN=NR



Substitute the value of x
NR=8-3=5
By property of rectangle
BI=AR=AN+NR=5+5=10 unit
BI=10 units
All the y values would be 0, since it’s a horizontal line
Answer:
A = 3244
B = 864
C = 3080
Step-by-step explanation:
700 + a = 3944
-700 -700
a = 3244
3944 - b = c - 80 = 3000
c - 80 = 3000
+80 +80
c = 3080
3944 - b = c ---> 3944 - b = 3080
-3944 -3944
-b = -864 --->
Answer:
453.75 sq. feet
Step-by-step explanation:
In this question, we are going to calculate the area of a room given the blue print measurement and the actual measurements with the answer being in the actual measurement.
To correctly do this, it is best if the measurements are converted to the actual.
The measurements we’ll be trying to convert is 5 inches by 3 inches with a scale of 2in to 11ft ( same as 1 in to 5.5 ft)
The 5 inches blueprint measurement will be 5 * 5.5 = 27.5 ft
The 3 inches blueprint measurement will be 3 * 5.5 = 16.5 ft
The area in sq. feet will be length * width = 27.5 * 16.5 = 453.75 sq feet