Square-red,blue,green
circle-red,blue,green
triangle-red,blue,green
add them together which will equal 9
        
             
        
        
        
It's D i just took the test, I'm sure of it
        
             
        
        
        
Answer: who made this question I think you need to round 250 to the nearest whole number I’m not sure.
Step-by-step explanation:
 
        
                    
             
        
        
        
The sum of three and a number is 3+x
        
             
        
        
        
Recall that for 

, i.e. a random variable 

 following a binomial distribution over 

 trials and with probability parameter 

,

So you have




The expected value of 

 is simply 

, while the standard deviation is 

. In this case, they are 

 and 

, respectively.