Unformatted text preview: Level Count Std Dev 0 5 0.786848 1 5 2.190678 Test F Ratio DFNum DFDen Prob > F O'Brien[.5] 1.6494 1 8 0.0235 BrownForsythe 1.5571 1 8 0.0247 Levene 1.5157 1 8 0.0253 Bartlett 3.2151 1 . 0.0730 Warning: Small sample sizes. Use Caution. H : μ newborns = μ 1YO where μ is the population mean plasma polyamine level H A : μ newborns ≠ μ 1YO Test statistic value: t = 2.444. Note: The tests of variance indicate that there is some evidence that the two populations have different variances (Levene’s test, F = 1.5157, pvalue = 0.0253), hence we will use the unequal variance test. The pvalue of the ttest is 0.0582. Conclusion: since the pvalue > alpha, we fail to reject the null hypothesis and conclude that with significance level of 0.03, there is insufficient evidence to indicate that mean plasma polyamine levels differ between newborn and 1 year old children....
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 Fall '08
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 Statistics, Normal Distribution, Statistical hypothesis testing, Student's ttest, mean plasma polyamine

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