Question

Question A. The below data correspond to an independent-measures t test. 1. Provide a hypothetical research question that is appropriate for an independent- measures t test. 2. Identify the independent and dependent variables of your research design, including the levels of the independent variable. 3. Describe what an alpha level is, and what the alpha level's relationship is to the null hypothesis in the specific context of your research study. 4. Using the following data below, determine whether the data is sufficient to conclude that there was a significant difference between your two conditions. Use an a = .05, two-tailed. Show all of your work, including all of the steps in your hypothesis test. 5. Compute the value of Cohen's d for these data. 6. Compute the value of r2 (percentage of variance accounted for) for these data. 7. Write a short paragraph demonstrating how the outcome of the hypothesis test would appear in a research report. (Use the template given to you on BB) Condition 1 Condition 2

Answer 1

1. Is there a significant difference between the two conditions?

2. Independent variable = Condition type (2 levels)

Dependent variable = Effect of the condition

3. The alpha level is the probability of making a Type I error. Reject the null if the p-value < Alpha level.

4. The hypothesis being tested is:

H0: µ1 = µ2

H1: µ1 ≠ µ2

The df is 14.

The test statistic is 2.245.

The p-value is 0.0414.

Since the p-value (0.0414) is less than the significance level (0.05), we can reject the null hypothesis.

Therefore, we can conclude that there is a significant difference between the two conditions.

Condition 1	Condition 2
10	7
8	4
7	9
9	3
13	7
7	6
6	10
12	2
Condition 1	Condition 2
9.00	6.00	mean
2.51	2.83	std. dev.
8	8	n
	14	df
	3.000	difference (Condition 1 - Condition 2)
	7.143	pooled variance
	2.673	pooled std. dev.
	1.336	standard error of difference
	0	hypothesized difference
	2.245	t
	.0414	p-value (two-tailed)
	1.12	Cohen's d
	0.265	r²

As per the Chegg answering guide, we have the option to answer only the first four sub-parts of a question in case of multiple parts. If you want to get the answers for the rest of the parts, please post the question in a new post.

Thank you! :)