Determine the sample size required for a large sample 95% confidence interval for a population proportion when

(a) ????̇ = 0.35 and the desired margin of error is ???????? = 0.04.

(b) ????̇ = 0.75 and the desired margin of error is ???????? = 0.025.

(c) ????̇ = 0.5 and the desired margin of error is ???????? = 0.03.

(d) ????̇ = 0.15 and the desired margin of error is ???????? = 0.035.