两总体均值差的置信区间配对样本

def solve():
    import numpy as np
    import matplotlib.pyplot as plt
    from scipy import stats
    before = [____, ____, ____, ____, ____, ____, ____, ____, ____, ____]
    after  = [____, ____, ____, ____, ____, ____, ____, ____, ____, ____]
    diff = np.array(____) - np.array(____)
    n = len(____)
    mean_d = diff.mean()
    se_d = stats.sem(____)
    ci = stats.t.interval(____, df=n-____, loc=mean_d, scale=se_d)
    print(____)
    print(____)
    plt.plot(range(____), diff, '____', color='____')
    plt.axhline(____)
    plt.axhline(____, color='____', ls='____', alpha=____)
    plt.fill_between(range(____), ci[____], ci[____], alpha=____, color='____', label='____')
    plt.xlabel(____); plt.ylabel(____); plt.title(____); plt.legend()
    plt.tight_layout(); plt.show()