Is a Normal Distribution Appropriate? In each case below, is the sample size large enough so that the sample proportions follow a normal distribution?           (a) n=550 and p=0.2     Yes   No               (b) n=20 and p=0.4     Yes   No               (c) n=30 and p=0.25     Yes   No               (d) n=100 and p=0.89     Yes   No

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter 6, Section 1-D, Exercise 009

Is a Normal Distribution Appropriate?

In each case below, is the sample size large enough so that the sample proportions follow a normal distribution?
 
 
 
 
 
(a) n=550 and p=0.2


 

 

Yes

 

No
 

 
 

 
 
 
 
(b) n=20 and p=0.4


 

 

Yes

 

No
 

 
 

 
 
 
 
(c) n=30 and p=0.25


 

 

Yes

 

No
 

 
 

 
 
 
 
(d) n=100 and p=0.89


 

 

Yes

 

No
 

 
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