Give it a Try! The data below shows the mean scores in the post-test of two sample groups of students taught using two different methods of teaching mathematics. Method A Method B 1. Formulate a null hypothesis about the population mean. 2 Formulate an alternative hypothesis for (a) a two tailed test and (b) a one tailed test. = 80 = 90 n1 = 20 n2 = 10 1=10

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