HP 40gs hp 40gs_user's guide_English_E_HDPMSG40E07A.pdf - Page 138
One-Sample T-Test
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hp40g+.book Page 12 Friday, December 9, 2005 1:03 AM Inputs Results The inputs are: Field name X1 X2 n1 n2 α The results are: Result Test π1-π2 Test Z Prob Critical Z Definition Sample 1 mean. Sample 2 mean. Sample 1 size. Sample 2 size. Significance level. Description Difference between the proportions of successes in the two samples. Z-Test statistic. Probability associated with the Z-Test statistic. Boundary values of Z associated with the α level that you supplied. One-Sample T-Test Menu name 11-12 T-Test: 1 μ The One-sample T-Test is used when the population standard deviation is not known. On the basis of statistics from a single sample, this test measures the strength of the evidence for a selected hypothesis against the null hypothesis. The null hypothesis is that the sample mean has some assumed value, Η0 :μ = μ0 You select one of the following alternative hypotheses against which to test the null hypothesis: H1:μ < μ0 H1:μ > μ0 H1:μ ≠ μ0 Inference aplet