1. The researchers want to examine the participant demographic information collected from the first testing session. Run a two-tailed ttest with = .05 to answer the following research question:

Are the females and males significantly different in age at the first testing session ("Age")?

A. What type of ttest should be performed to answer this question? What is your rationale?

Select appropriatettest:

a. One-samplettest, because there is only one sample

b. Paired-samplesttest, because the two samples are related

c. Independent-samplesttest, because there is only one sample

d. Independent-samplesttest, because the two samples are not related

2. The researcher would like to know if memory function changes significantly from the first testing session (Mem1) to the second testing session (Mem2). Perform a two-tailed ttest with = .05 to answer the following question:

Does memory performance change significantly from the first session to the second session?

B. What type of ttest should be performed to answer this question? What is your rationale? a. In memory performance, the second session is not significantly lower than the first session

b. In memory performance, the first session and the second session are not significantly different.

c. In memory performance, the second session significantly lower than the first session.

d. In memory performance, the first session and the second session are significantly different.

3. For education, the participants were categorized as either having a college degree or above, or not having a college degree. The researcher would like to know if those two groups differ in their memory performance during the first testing session. Run a two-tailed ttest with = .05 to answer the following research question:

Is there a significant difference in the first memory performance (Mem1) between people with a college degree or above and people without a college degree?

3A. What type of ttest should be performed to answer this question? What is your rationale?

a.One-samplettest, because there is only one sample

b.Paired-samplesttest, because the two samples are related

c. Independent-samplesttest, because there is only one sample

d. Independent-samplesttest, because the two samples are not related

3B.t (48) = 0.304, p = .762, d = 0.086 What is the answer to the research question? Is there a significant difference in the first memory performance (Mem1) between people with a college degree or above and people without a college degree?

a. On the memory performance in the first session, people with a college degree are significantly higher than people without a college degree.

b. On the memory performance in the first session, people with a college degree are not significantly different from people without a college degree.

c. On the memory performance in the first session, people with a college degree are not significantly higher than people without a college degree.

d. On the memory performance in the first session, people with a college degree are significantly different from people without a college degre