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calculating 95 confidence interval

# calculating 95 confidence interval

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95% Confidence level is usually considered as the desired level of confidence in Statistics for a given sample mean. If we consider 100 different samples and evaluate 95% confidence interval for each sample, then 95% confidence interval means nearly 95 out of 100 confidence interval contains the true population mean. 95 Confidence interval calculator is the online tool which can evaluate this interval value.

Example 1: Given sample size in a given population is 12. If the standard deviation is 22 and the sample mean is 30, find the 95% confidence interval for the given mean number.

In order to find the 95% confidence interval (μ), we can use the formula:

Example 2: Given sample size in a given population is 5. If the standard deviation is 7 and the sample mean is 16, find the 95% confidence interval for the given mean number.

In order to find the 95% confidence interval (μ), we can use the formula: