11.24.xlsx - 4.21 5.55 3.02 5.13 4.77 2.34 3.54 3.2 4.5 6.1...

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Waiting Time4.219.665.555.93.028.025.135.794.778.732.343.823.548.013.28.354.510.496.16.680.385.645.124.086.466.176.199.913.795.47
(assumes equal population variances)DataConfidence Interval EsHypothesized Difference0for the Difference BetweenLevel of Significance0.05Population 1 SampleDataSample Size15Confidence LevelSample Mean4.2866666667Sample Standard Deviation1.30274Intermediate CalculaPopulation 2 SampleDegrees of FreedomSample Size15Sample Mean7.1146666667Interval Half WidthSample Standard Deviation2.082189324Confidence InterIntermediate CalculationsInterval Lower LimitPopulation 1 Sample Degrees of Freedom14Interval Upper LimitPopulation 2 Sample Degrees of Freedom14Total Degrees of Freedom28Pooled Variance3.0163Standard Error0.6342Difference in Sample Means-2.8280-4.4593Two-Tail TestLower Critical Value-2.0484Upper Critical Value2.04840.0001Reject the null hypothesisPooled-Variance tTest for the Difference Between Two Meanst Valuet Test Statisticp-Value
stimate n Two Means95%ations282.04841.2990rval-4.1270-1.5290
Z Test for Differences in Two MeansDataHypothesized Difference0Level of Significance0.05Population 1 SampleSample Size8Sample Mean42Population Standard Deviation4Population 2 SampleSample Size15Sample Mean34Population Standard Deviation5Intermediate CalculationsDifference in Sample Means8Standard Error of the Difference in Means1.91494.1779Two-Tail TestLower Critical Value-1.9600Upper Critical Value1.96000.0000Reject the null hypothesisZTest Statisticp-Value
Z Test for Differences in Two ProportionsDataConfidence Interval Estimate Hypothesized Difference0of the Difference Between Two PropoLevel of Significance0.01Group 1DataNumber of Items of Interest63Confidence LevelSample Size100Group 2Intermediate CalculationsNumber of Items of Interest25Sample Size50Std. Error of the Diff. between two ProportionsInterval Half WidthIntermediate CalculationsGroup 1 Proportion0.63Confidence IntervalGroup 2 Proportion0.5Interval Lower LimitDifference in Two Proportions0.13Interval Upper LimitAverage Proportion0.58671.5242Two-Tail TestLower Critical Value-2.5758

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