1. X=5 
2. I think I’m not sure is - 5.04
        
             
        
        
        
I think is yes but I’m not sure
        
                    
             
        
        
        
I think it’s b hope it helps
        
                    
             
        
        
        
Answer: a. 0.40   b. 0.23   c . 0.435   d . 0.25
Step-by-step explanation:
                                    melanin      content    Total 
                                             high   low 
moisture   high                     13      10                23
content    low                       47      30                77
  Total                                   60      40              <u> </u><u>100</u>
Let A denote the event that a sample has low melanin content, and let B denote the event that a sample has high moisture content. 
a) Total skin samples has low melanin content = 10+30=40
 P(A)=
b) Total skin samples has high moisture content = 13+10=23
P(B) =
c) A ∩ B =  Total skin samples has both low melanin content and high moisture content =10
P(A ∩ B) =
Using conditional probability formula , 
 
d)  
 
 
        
             
        
        
        
Answer:
If you mean by 1*2*3=6
Step-by-step explanation: