Mathematics, 18.08.2019 02:20, eliz10

When testing for differences ofâ means, t = (ym - yw)/se(ym - yw)â, where se(ym - yw) = [(sm^2/nm)+(sw^2/nw)]^1/2 âhas: (a) a student t distribution if the population distribution of y is not normal.(b) cannot be computed unless n subscript m equals n subscript w.(c) a normal distribution even in small samples.(d) a student t distribution if the population distribution of y is normal.

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When testing for differences ofâ means, t = (ym - yw)/se(ym - yw)â, where se(ym - yw) = [(sm^2/nm)+(...

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