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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 Brown-Forsythe 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 : newborns = 1YO where is the population mean plasma polyamine level H A : newborns 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 (Levenes test, F = 1.5157, p-value = 0.0253), hence we will use the unequal variance test. The p-value of the t-test is 0.0582. Conclusion: since the p-value > 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