Answer:
A. True
Step-by-step explanation:
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the first one is 0.00001
Step-by-step explanation:
its on the screen
 
        
                    
             
        
        
        
Answer:
no
Step-by-step explanation:
 
        
             
        
        
        
The confidence interval would be

.
We use the formula

, where

, with p being the sample proportion and N being the sample size.
First we find the z-score associated with this level of confidence:
Convert 95% to a decimal:  95/100 = 0.95
Subtract from 1:  1-0.95 = 0.05
Divide by 2:  0.05/2 = 0.025
Subtract from 1:  1-0.025 = 0.975
Using a z-table (http://www.z-table.com) we see that this value is associated with a z-score of 1.96.
Since 578/720 said yes, this gives us p=0.80:

This gives us
 
 
        
        
        
Answer:
its 92
Step-by-step explanation:
81+32+21
=81+9+21
=90+21
=90+2
=92