Answer:
X=sigma xi/no of observation 
5= (?) /4
5*4=sum of all numbers 
20=sum of all the observation
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It is given the probability that a dancer like ballet is 0.35
So, P(B) = 0.35
It is given the probability that a dancer like tap is 0.45
So, P(T)= 0.45
The probability that he likes both ballet and tap is 0.30
So, 
the probability that the dancer likes ballet if we know she likes tap. This is the case of conditional probability.
So, 

= 0.666
= 0.67
Therefore, the probability that the dancer likes ballet if we know she likes tap is 0.67.
Option 3 is the correct answer.
 
        
             
        
        
        
Answer:
Area = 
Step-by-step explanation:
Area of Triangle = 
Where Base = 6 , Height = 6
Area = 
Area = 3 * 6
<u><em>Area = 18 units^2</em></u>
 
        
                    
             
        
        
        
Answer:
I think the time taken will be 1/3 of what the time is now since the time of the car is tripled.
Step-by-step explanation: