Here we have to find the probability  . Now express the probability in terms of standard normal cumulative distribution function. That is
. Now express the probability in terms of standard normal cumulative distribution function. That is  .
.

Now you can look up the probability from the standard normal tables. Its value is

 
        
                    
             
        
        
        


Thus, the final answers are 1 and -1/8.
 
        
             
        
        
        
Answer:
 The greatest common factor of 39, 42, and 33 is 3
Step-by-step explanation:
 
        
                    
             
        
        
        
For this case what we have to take into account is the following variable:
 x = represent the unknown number
 We now write the following inequality:
 "four times the sum of number and 15 is at least 20"
 4 (x + 15)> = 20
 We clear the value of x:
 (x + 15)> = 20/4
 (x + 15)> = 5
 x> = 5 - 15
 x> = - 10
 The solution set is:
 [-10, inf)
 Answer:
 all possible values for X are:
 [-10, inf)
        
             
        
        
        
Answer:
Domain of f(p) =  [0,∞), where it belongs to whole numbers only
Step-by-step explanation:
The domain is the set of all possible values of independent variable for which function is defined
 As in the given function f(p), we have the independent variable p. As p is the number of people working on the project, so it means either the number of people could be 0 or it could be anything greater than 0,  like it could be equal to thousand or ten thousand, but it can not be fraction in any case.
So, the domain is set of whole numbers starting from 0.
Domain of f(p) = [0,∞)