HP 39GS hp 39gs_user's guide_English_E_HDPMG39AE13.pdf - Page 140
Two-Sample Z-Interval
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Results The results are: Result Critical Z μ min μ max Description Critical value for Z. Lower bound for μ. Upper bound for μ. Two-Sample Z-Interval Menu name Inputs Z-INT: μ1- μ2 This option uses the Normal Z-distribution to calculate a confidence interval for the difference between the means of two populations, μ1- μ2, when the population standard deviations, σ1 and σ2, are known. The inputs are: Field name x1 x2 n1 n2 σ1 σ2 C Definition Sample 1 mean. Sample 2 mean. Sample 1 size. Sample 2 size. Population 1 standard deviation. Population 2 standard deviation. Confidence level. Results The results are: Result Critical Z Δ μ Min Δ μ Max Description Critical value for Z. Lower bound for μ1 - μ2. Upper bound for μ1 - μ2. 11-16 Inference aplet