Five students were tested before and after taking a class to improve their study habits. They were given articles to read which contained a known number of facts in each story. After the story each student listed as many facts as he/she could recall. The following data was recorded. The researcher is wondering whether the class will help students recall more facts. Will the hypotheses be directional or nondirectional? BEFORE 10 12 14 16 12 AFTER 15 14 17 17 20
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Five students were tested before and after taking a class to improve their study habits. They were given articles to read which contained a known number of facts in each story. After the story each student listed as many facts as he/she could recall. The following data was recorded. The researcher is wondering whether the class will help students recall more facts. What statistical test will you use to test the researcher's hypothesis? BEFORE 10 12 14 16 12 AFTER 15 14 17 17 20 A. t-test for correlated groups B. t-test for single samples C. t-test for independent groups D. One-way ANOVA E. Chi-square F. Z-test for single samples
Ana Carolina D.
Five students were tested before and after taking a class to improve their study habits. They were given articles to read which contained a known number of facts in each story. After the story, each student listed as many facts as he/she could recall. The following data was recorded: before 10, 12, 14, 16, 12; after 15, 14, 17, 17, 20. b. What is the null hypothesis? c. What is the alternative hypothesis? d. What is your conclusion, using α = 0.052 tail? e. What type of error may you be making because of your conclusion in part c? Please show all work. f. What is the size of effect, using Cohen's d? g. What do you conclude using α = 0.052 tail?
Adi S.
Five students were tested before and after taking a class to improve their study habits. They were given articles to read which contained a known number of facts in each story. After the story, each student listed as many facts as he/she could recall. The following data was recorded. Before 10 12 14 16 12 After 15 14 17 17 20 a. What is the alternative hypothesis? b. What is the null hypothesis? c. What is your conclusion, using α = 0.05 tail? d. What type of error may you be making because of your conclusion in part c? Please show all work. e. What is the size of effect, using Cohen's d?
Sri K.
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