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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def confidence_interval_continuous( point_estimate, stddev, sample_size, confidence=.95, **kwargs ):
 """Continuous confidence interval from sample size and standard error"""

    alpha = ppf((confidence + 1) / 2, sample_size - 1)

    margin = stddev / sqrt(sample_size)
    return (point_estimate - alpha * margin, point_estimate + alpha * margin)