Answer:
The correct answer is "664".
Step-by-step explanation:
The given values are:
Margin of error,
E = 5%
i.e.,
  = 0.05
Level of confidence,
C = 99%
i.e.,
  = 0.99
Level of significance,
α = 0.01
From the z value table,
Critical z = 2.576
As we know,
The required sample size n will be:
= Â [tex](\frac{z}{E} )^2\times p(1-p)[/tex]
On substituting the values, we get
= Â [tex](\frac{2.576}{0.05} )^2\times 0.5(1-0.5)[/tex]
= Â [tex](51.52)^2\times 0.25[/tex]
= Â [tex]2,654.31\times 0.25[/tex]
= Â [tex]663.5776[/tex]
i.e.,
= Â [tex]664[/tex]