WebbThis is a two-sided test: the alternative median may be greater than or less than 200 weeks. If the null hypothesis is true, that the median survival is 200 weeks, then, in a … Webb5 mars 2016 · 1 Answer. Don't divide by the numbers in the group. That would produce a substantially diminished sample size which severely affects the p-value.: prop.test (x=c (122,99), n=c (600,400), correct=F) 2-sample test for equality of proportions without continuity correction data: c (122, 99) out of c (600, 400) X-squared = 2.7194, df = 1, p …
A fair 2-sided coin is flipped 6 times. What is the probability that
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