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1.1 Comparing two treatments: the two-sample t-test 7Two-sample t-testVariate: yieldGroup factor: methodTest for equality of sample variancesTest statistic F = 1.07 on 7 and 7 d.f.Probability (under null hypothesis of equal variances) = 0.93SummaryStandard Standard errorSample Size Mean Variance deviation of meannew 8 23.00 4.286 2.070 0.7319standard 8 20.00 4.000 2.000 0.7071Difference of means: 3.000Standard error of difference: 1.01895% confidence interval for difference in means: (0.8173, 5.183)Test of null hypothesis that mean of yield with method = new is equalto mean with method = standardTest statistic t = 2.95 on 14 d.f.Probability = 0.011The t-statistic is 2.95 on 14 degrees of freedom. Under the "null hypothesis" that thereis no difference between the means, this would have a probability of 0.011. We canconclude that this is unlikely. So there is evidence that the manufacturing methods dodiffer.