Question
My questions are: Question 2: How does using a Latin Square aid a researcher in counterbalancing a study? Question 4: A researcher is interested in
My questions are:
Question 2: How does using a Latin Square aid a researcher in counterbalancing a study?
Question 4: A researcher is interested in whether participating in sports positively influences self-esteem in young girsl. She identifies a group of girls who have not played sports before but are now planning to begin participating in organized sports. The researcher gives them a 50-item self-esteem inventory before they begin playing sports and administers the same test again after 6 months of playing sports. The self-esteem inventory is measured on an interval scale, with higher numbers indicating higher self-esteem. In addition, scores on the inventory are normally disctibuted
The socres follow:
Before After
44 46
40 41
39 41
46 47
42 43
43 45
- what statistical test should be used to analyze these data?
- Identify Ha and ho for this study.
- Conduct the appropriate analysis.
- Should Ho be rejected? What should the researher conclude?
- If significant, compute and interpret the effect size.
- If significant, draw a graph representing the data.
- Determine the 95% confidence interval
Question 6: Identify the statistical procedure that should be used to analyze the data from each of the following studies:
- A study that investigates whether men or women (age 16-20) spend more money on clothing. Assume the amount of money spent is normally distributed.
- A study that investigates whether students perform better in a class that uses group learning, exercises versus a class that uses the traditional lecture method. Two classes that learn the same information are selected. Performacnce on a 50-item final exam at the end of the semester is mearsred.
- In the (b) study above, researchers instead decide to use the same participants in both conditions. Thus group learning exercises are used for half of the semester and traditional lectures for the other half of the semester. These two procedures are counterbalanced across students to avoid design flaws. As in the (b) study above, performance on a 50-item final exam is measured
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