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?
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?
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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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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