Answer:
1/2
Step-by-step explanation:
there ARE ONLY TWO GENDERS
THE dog can be male or female = 
sum genders = 2
probability of been a male = 1/2
 
        
             
        
        
        
Answer:
 
And we can find the probability with this difference:
 
And using the normal standard table or excel we got:
 
And the best answer would be:
0.3811
Step-by-step explanation:
Let X the random variable that represent the ratings of a population, and for this case we know the distribution for X is given by:
 
  
Where  and
 and  
We are interested on this probability
 
And the best way to solve this problem is using the normal standard distribution and the z score given by:
 
Using the z score we got:
 
And we can find the probability with this difference:
 
And using the normal standard table or excel we got:
 
And the best answer would be:
0.3811
 
        
             
        
        
        
Answer:
a. 52%
b. 40%
Step-by-step explanation:
Let A represents the event of raining on Monday and B represents the event of raining in Tuesday,
Then according to the question,
P(A) = 20% = 0.2,
P(B) = 40% = 0.4,
Here, A and B are independent events,
So, P(A∩B) = P(A) × P(B),
⇒ P(A∩B) = 0.2 × 0.4 = 0.08
We know that,
P(A∪B) = P(A) + P(B) - P(A∩B)
a. The probability it rains on Monday or Tuesday, P(A∪B) = 0.2 + 0.4 - 0.08
= 0.52
= 52%
b. The conditional probability it rains on Tuesday given that it rained on Monday,

 
        
             
        
        
        
Answer:
5,000
Step-by-step explanation:
5-up round up 4-down round down