Try it Yourself: Statistics Hypothesis Testing

Statistics Hypothesis Testing

Language: Statistics

import math

def normal_cdf(x):
    return 0.5 * (1 + math.erf(x / math.sqrt(2)))

def two_tailed_p_value(z):
    return 2 * (1 - normal_cdf(abs(z)))

z = 2.14  # observed test statistic
p = two_tailed_p_value(z)
print("Two-tailed p-value:", round(p, 4))

import math

def normal_cdf(x):
    return 0.5 * (1 + math.erf(x / math.sqrt(2)))

def two_tailed_p_value(z):
    return 2 * (1 - normal_cdf(abs(z)))

z = 2.14  # observed test statistic
p = two_tailed_p_value(z)
print("Two-tailed p-value:", round(p, 4))

Output

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