The sample size (n) is calculated according to the formula: n =
z2 * p * (1 - p) / e2
Where: z = 1.96 for a confidence level (α) of 95%, p = proportion
(expressed as a decimal), e = margin of error.
z = 1.96, p = 0.5, e = 0.054000000000000006
n = 1.962 * 0.5 * (1 - 0.5) / 0.0540000000000000062
n = 0.9604 / 0.0029 = 329.355
n ≈ 330
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