A study was conducted to evaluate how foreign language learning is influenced by instruction methods- immersion vs. memorization. The study used two groups of native English speakers. One group (Group1, with n=9 participants) participated in a course focusing on immersion, while the second group (Group2, with n=10 participants) participated in a course focusing on memorizing words and grammar. Both groups took a language test immediately following the course and their test scores were compared. Group1 had a mean exam score of 70 and the sum of squares SS =72, while Group 2 had a mean exam score of 86 and the sum of squares SS =90. The researcher wants to know if there is a significant difference between the mean exam scores of the two groups. An alpha level of .05 was set by the researcher. What type of t-test should you do? related-samples independent-samples Is the hypothesis directional or non-directional? State the null and alternative hypotheses in notation form. H0: μ1 – μ2 ≤ 0; H1: μ1 – μ2 > 0 H0: μD ≤ 0; H1: μD > 0 H0: μD = 0; H1: μD =/ 0 H0: μ1 = μ2; H1: μ1 =/ μ2 What is the critical t? 1.1740 2.093 2.228 2.110 What is the calculated t? 3.653 2.110 2.867 4.378 Do you reject the null? Write your conclusion. (not in APA format)
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A study was conducted to evaluate how foreign language learning is influenced by instruction methods- immersion vs. memorization. The study used two groups of native English speakers. One group (Group1, with n=9 participants) participated in a course focusing on immersion, while the second group (Group2, with n=10 participants) participated in a course focusing on memorizing words and grammar. Both groups took a language test immediately following the course and their test scores were compared. Group1 had a mean exam score of 70 and the sum of squares SS =72, while Group 2 had a mean exam score of 86 and the sum of squares SS =90. The researcher wants to know if there is a significant difference between the mean exam scores of the two groups. An alpha level of .05 was set by the researcher.
What type of t-test should you do?
related-samples
independent-samples
Is the hypothesis directional or non-directional?
State the null and alternative hypotheses in notation form.
H0: μ1 – μ2 ≤ 0; H1: μ1 – μ2 > 0
H0: μD ≤ 0; H1: μD > 0
H0: μD = 0; H1: μD =/ 0
H0: μ1 = μ2; H1: μ1 =/ μ2
What is the critical t?
1.1740
2.093
2.228
2.110
What is the calculated t?
3.653
2.110
2.867
4.378
Do you reject the null?
Write your conclusion. (not in APA format)
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