Small Sample Confidence Interval For A Mean
A researcher constructs a confidence interval for a population mean using data from a small sample. If the interval is based on the normal distribution, what is the fundamental mistake in this method?
A
For small samples with a continuous variable, the t-distribution with the appropriate degrees of freedom should be used instead of the normal distribution.
B
There is no mistake; the normal distribution is appropriate regardless of sample size.
C
They should have used a chi-square distribution instead of the normal distribution.
D
The error lies in the miscalculation of the sample mean.
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