A researcher wishes to compare a new method of teaching reading to slow learners to the current standard method. Of a random sample of 20 slow learners, eight are taught by the new method and twelve are taught by the standard method. All 20 children are taught by qualified instructors under similar conditions for a 6-month period. The results of the reading test at the end of this period are summarized as follows: New Method n1 = 8; X1 = 76.9; S1 = 4.85. Standard Method n2 = 12, X2 = 72.7; s2 = 6.35. Use 5% significance level. 1. what is the degree of freedom? 2. what is the computed value? 3. what is the decision?

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