HP 40gs hp 40gs_user's guide_English_E_HDPMSG40E07A.pdf - Page 144
One-Sample T-Interval
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hp40g+.book Page 18 Friday, December 9, 2005 1:03 AM Results Field name n1 n2 C Definition (Continued) Sample 1 size. Sample 2 size. Confidence level. The results are: Result Critical Z Δ π Min Δ π Max Description Critical value for Z. Lower bound for the difference between the proportions of successes. Upper bound for the difference between the proportions of successes. One-Sample T-Interval Menu name Inputs T-INT: 1 μ This option uses the Student's t-distribution to calculate a confidence interval for m, the true mean of a population, for the case in which the true population standard deviation, s, is unknown. The inputs are: Field name x1 Sx n C Definition Sample mean. Sample standard deviation. Sample size. Confidence level. 11-18 Inference aplet