两组均值比较t检验

def solve():
    from sklearn.datasets import load_iris
    import matplotlib.pyplot as plt
    import numpy as np
    from scipy import stats
    iris = load_iris()
    setosa_petal = iris.data[iris.target == ____, ____]
    versicolor_petal = iris.data[iris.target == ____, ____]
    print(____)
    print(____)
    t_stat, p_value = stats.ttest_ind(____)
    print(____)
    print(____)
    print(____)
    plt.figure(figsize=(____, ____))
    plt.hist(____)
    plt.hist(____)
    plt.xlabel(____)
    plt.ylabel(____)
    plt.title(____)
    plt.legend()
    plt.grid(____)
    plt.show()