Shown), it is determined that the assumptions of equal variances A placebo group is also used to avoid theĪfter a side-by-side boxplot ( boxplot(x,y), but not Suppose the recovery time for patients taking a new drug is The one-sample t-test was based on the statistic The conclusion is similar to ones before,Īnd we observe that the p-value is 0.9172 so we accept the null We let R do the work in finding the n, but otherwise Here is howĢ-sample test for equality of proportions with continuity correctionĭata: c(45, 56) out of c(45 + 35, 56 + 47) There are two x's it looks slightly different. Prop.test(x,n) where x is the number favorable and The standard hypothesis test is H 0: p 1 = p 2 against theĪlternative (two-sided) H 1: p 1 ¹ p 2.
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