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9-20 Inference aplet
One–Sample T–Interval
Menu name T–INT: 1 µ
This option uses the Student’s t–distribution to calculate a
confidence interval for µ, the true mean of a population, for
the case in which the true population standard deviation, σ, is
unknown.
Inputs The inputs are:
Results The results are:
Field name Definition
Sample mean.
Sx Sample standard deviation.
n Sample size.
C Confidence level.
x
Result Description
Critical T Critical value for T.
µ Min Lower bound for µ.
µ Max Upper bound for µ.