STATISTICS Lecture Notes - Null Hypothesis, Test Statistic, The Onion
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Students"s t test paired and independent t test. Test for single mean (n<30: form the null hypothesis. Ho: = o (i. e) there is no significance difference between the sample mean and the population mean ie. , = o: form the alternate hypothesis. H1 : o (or > o or < o) ie. , there is significance difference between the sample mean and the population mean: level of significance. The level may be fixed at either 5% or 1: test statistic. Where s : find the table value ttab=t(0. 05,(n-1) d. f, inference. If tcal ttab. 1 (i)we reject the null hypothesis h0 (ie) we accept the alternative hypothesis (ii)there is significant difference between the sample mean and the population mean. Based on field experiments, a new variety green gram is expected to given an yield of 12. 0quintals per hectare.
