Dr Azmi Mohd Tamil 2012 10 11. Therefore our sample size is 207 low income earners that will be drawn randomly from Abakaliki metropolises. Entering the values in the formula yields.
E margin of error.
Substituting f 1 and f 2 into the formula below we get the following. P standard of deviation. So to increase accuracy we simply need to increase the sample size. If necessary a smaller sample size could be used but this would result in a loss of precision or confidence or both if the true value of P was close to 25.
