I have mean 2.25 and sample size 190. I want to calculate the confidence interval (Upper Confidence level and lower confidence level) for this sample size. I know how to calculate confidence interval with standard deviation. However, I don't know standard deviation for the sample in this problem. Is there a way to find interval based on mean value for this sample?
2026-02-25 12:56:26.1772024186
Calculate 95% confidence interval without sample standard deviation?
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