Answer:
The sample size is  
Step-by-step explanation:
From the question we are told that 
     The  sample proportion is  
      The  margin of error is  
Given that the confidence level is 95%  the level of significance is mathematically represented as 
         
         
         
Next  we obtain the critical value of   from the normal distribution table , the values is
 from the normal distribution table , the values is
                    
 The reason we are obtaining critical value of     instead of
 instead of     is because
 is because  
 represents the area under the normal curve where the confidence level interval (
 represents the area under the normal curve where the confidence level interval (   ) did not cover which include both the left and right tail while
) did not cover which include both the left and right tail while  
 is just the area of one tail which what we required to calculate the margin of error
 is just the area of one tail which what we required to calculate the margin of error
Generally the margin of error is mathematically represented as 
       
substituting values 
           
          
          
           
             
 
=>       
     
 
        
             
        
        
        
Answer:
28%
Step-by-step explanation:
I did it and it was right 
 
        
                    
             
        
        
        
Answer:

Step-by-step explanation:







<h3>⚝──⭒─⭑─⭒──⚝⚝──⭒─⭑─⭒──⚝</h3>
 
        
             
        
        
        
Answer:
cos(400)
Step-by-step explanation:
Useful things:
Cofunction identity: sin(x)=cos(90-x)
Sine and cosine have period of 360 degrees.
So sin(50)=cos(40) by cofunction identity.
Since cosine has period of 360 degrees then cos(40)=cos(360+40).
That simplifies to cos(400).
 
        
             
        
        
        
Answer:
-d+3.5≥4
Step-by-step explanation:
Just ask.
Hope this helps! :)