Using the normal approximation to the binomial,we find Ps>55)=P(”>50）) 55-50 =1-P(z≤1) ≈1-Φ(1) =1-0.8413 =0.1587• Using the normal approximation to the binomial, we find 𝐏 𝑆 > 55 = 𝐏 𝑆−50 5 > 55−50 5 = 1 − 𝐏(𝑧 ≤ 1) ≈ 1 − Φ 1 = 1 − 0.8413 = 0.1587