ind-samples

ind-samples - Important Note: Hypothesis Testing Example...

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Hypothesis Testing Example for Independent Samples ( µ 1 - µ 2 ) Exercise 9.31 page 427 of Statistics, 6th Edition by McClave and Dietrich: "To compare two methods of teaching reading, randomly selected groups of elementary school children were assigned to each of the two methods for a 6-month period. The criterion for measuring achievement was a reading comprehension test." The 11 students assigned to method 1 had a mean score of 64 with a variance of 52. The 14 students assigned to method 2 had a mean score of 69 with a variance of 71. Do the data provide enough evidence to indicate a difference in the mean scores on the comprehension test for the two teaching methods? Use α = .05. H a : There is a difference in the mean scores on the comprehension test for the two teaching methods. ( µ Method 1 - µ Method 2 = /0 ) H o : There is no difference in the mean scores on the comprehension test for the two teaching methods. ( µ Method 1 - µ Method 2 =0 )
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