The formula for the confidence interval is given by
Sample mean + z*[σ/√n], and
Sample mean - z*[σ/√n]
We have:
Sample mean = 23.95
n = 40 
σ = 2.55
z* for 99% confidence = 2.58
Substitute these values into the formula, we have
23.95 + (2.58)(2.55÷√40) = 24.99
23.95 - (2.58)(2.55÷√40) = 22.91
So the lower interval is 22.91 and the highest interval is 24.99
        
             
        
        
        
Let x be the first number each pair and y is the second of each
As you see 1x is 3y 
And. 2x is 3*3y= 9y
3x = 3*3*3y= 27y
Last 4x =3*3*3*3y= 81y
So y = 3^x
        
             
        
        
        
To find the total different outfits, multiply the quantity of each item together:
10 x 3 x 5 x 8 x 4 = 4,800 
Answer: 4,800 different outfits
 
        
             
        
        
        
196 I think hope this helps
        
                    
             
        
        
        
Answer:
commission rate of Maurice is 12%
Step-by-step explanation:
Maurice earns commission = $6,048
Lexus priced at = $50,400
 Maurice's commission rate = 
=
=
=12 %
hence the commission rate of Maurice is 12%