均值差置信区间1978vs1985工资

def solve():
    import pandas as pd
    import matplotlib.pyplot as plt
    from scipy import stats
    import numpy as np
    url = '____'
    df = pd.read_csv(____)
    w78 = df[df['____']==____]['____']
    w85 = df[df['____']==____]['____']
    diff = w85.mean()-w78.mean()
    se = np.sqrt(w85.var()/len(____)+w78.var()/len(____))
    tc = stats.t.ppf(____, len(____)+len(____)-____)
    print(____)
    print(____)
    plt.boxplot([w78, w85], labels=['____','____'], patch_artist=True, boxprops=dict(____))
    plt.ylabel(____); plt.title(____); plt.tight_layout(); plt.show()