Answer:
Lets Recall, p= 0.080, n=100, UCL= 0.161
Then np=100, 0.080=8
Step-by-step explanation:
The full steps or solution to this is in an an attached document.
Assume that the salaries of elementary school teachers in the united states are normally distributed with a mean of $32,000 and
2 answers:
Answer: 0.9525
Step-by-step explanation:
Given : The salaries of elementary school teachers in the united states are normally distributed with a mean of and a standard deviation of
.
Sample size : n= 100
Let x be a random variable that denotes the salaries of elementary school teachers in the united states.
Formula :
Then, the probability that their mean salary is less than $32,500 will be :-
Hence, the probability that their mean salary is less than $32,500 = 0.9525
You might be interested in
Answer:
- B) One solution
- The solution is (2, -2)
- The graph is below.
=========================================================
Explanation:
I used GeoGebra to graph the two lines. Desmos is another free tool you can use. There are other graphing calculators out there to choose from as well.
Once you have the two lines graphed, notice that they cross at (2, -2) which is where the solution is located. This point is on both lines, so it satisfies both equations simultaneously. There's only one such intersection point, so there's only one solution.
--------
To graph these equations by hand, plug in various x values to find corresponding y values. For instance, if you plugged in x = 0 into the first equation, then,
y = (-3/2)x+1
y = (-3/2)*0+1
y = 1
The point (0,1) is on the first line. The point (2,-2) is also on this line. Draw a straight line through the two points to finish that equation. The other equation is handled in a similar fashion.
