Answer:
25%
Step-by-step explanation:
24-18= 6
<u>6</u><u> </u><u> </u><u> </u>× 100 = 25%
<u>24</u>
 
        
                    
             
        
        
        
Let X be a discrete random variable with geometric distribution.
 Let x be the number of tests and p the probability of success in each trial, then the probability distribution is:
 P (X = x) = p * (1-p) ^ (x-1). With x = (1, 2, 3 ... n).
 This function measures the probability P of obtaining the first success at the x attempt.
 We need to know the probability of obtaining the first success at the third trial.
  Where a success is defined as a customer buying online. 
 The probability of success in each trial is p = 0.3.
 So:
 P (X = 3) = 0.3 * (1-0.3) ^ (3-1)
 P (X = 3) = 0.147
 The probability of obtaining the first success at the third trial is 14.7%
        
             
        
        
        
Answer:
26
Step-by-step explanation:
SORRY IF IM WRONG 
 
        
             
        
        
        
Answer:
small=15 large=40
Step-by-step explanation:
x=large box 
y=small box
55 = x + y
  
50x + 55y = 2825
  
50x + 55( 55 - x) = 2825
  
50x + 3025 - 55x = 2825
  
0 = 55x - 50 x + 2825 - 3025
  
0 = 5x - 200
  
200 = 5x
  
x=40
  
y = 15