Question 1174555
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Hi
     u - ME = .438             
    <u> u + ME = .642</u>
      2u = 1.080    
 Sample Mean = .54

n = {{{(z/ME)^2 (p(1-p)))}}}

n = {{{(1.96/.08)^2 (.54)(.46)))}}}

Will let You finish it up.  
Important You are comfortable with Your calculator
Wish You the Best in your Studies.

 = CI	z = value
90%	z =1.645
92%	z = 1.751
95%	z = 1.96
98%	z = 2.326
99%	z = 2.576
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