﻿from scipy.stats import norm  # 正規分布(Normal distribution)のモジュール
mu = 51  # 平均
sd = 25  # 標準偏差
print(norm.cdf(54, loc=mu, scale=sd) - norm.cdf(52, loc=mu, scale=sd))  # (1)
print(norm.cdf(52, loc=mu, scale=sd) - norm.cdf(49, loc=mu, scale=sd))  # (2)
print(1.0 - norm.cdf(61, loc=mu, scale=sd))  # (3)
print(norm.cdf(0,loc=mu,scale=sd))  # 試験の点数が負になる確率