![]() ![]() If sample size (n30) we will use the normal distribution to calculate the confidence intervals for the mean by assuming the sample mean is normally distributed due to central limit theorem.Ĭool Tip: Learn How to calculate z score in python ! How to Interpret Confidence Intervals Standard error = sample standard error/ √sample size ![]() T = t-multiplier is calculated based on degree of freedom and desired confidence interval 7 Conclusion Confidence Interval for MeanĬonfidence Interval = x̄ ± (t * standard error)
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