Sorry if i am wrong but it's 40
        
             
        
        
        
Answer:

Standard error of mean = 689
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = $28,520 
Standard Deviation, σ = $5600
Mean of sampling distribution =

As per Central Limit Theorem, if the sample size is large enough, then the sampling distribution of the sample means follow approximately a normal distribution.
Sample size, n = 66
Since the sample size is large, we can use normal distribution for approximation.
Standard error of mean =

 
        
             
        
        
        
To find the area of a triangle, multiply the height (6) by the base (4) and divide by 2. 
- 6 • 4 = 24, 24 / 2 = 12.
The area of this triangle is 12.
        
             
        
        
        
Your answer is 1/5 Hope this helps :D
 
        
             
        
        
        
<h3>
Answer: 625</h3>
Work Shown: 
The set {A,B,C,1,2} has five items. There are four slots to fill. 
So we have 5^4 = 5*5*5*5 = 625 different possible passwords where the characters can be repeated.