Which of thefollowing is/are appropriate statement/s about confidence intervals for a mean? Select all that apply… A. That the samplestandard deviation may not be a reliable estimate for the population standard deviation is aconcern with smaller samples B. Underconditions of severe non-normality of the distribution of the mean in thepopulation, using the t-distribution will correct the non-normality C. Tells us thevariability between individual observations in the population providing that distribution is approximately normal D. Informs us arange of plausible values for the population mean, given the sample mean
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