Data Preparation:For items Q2 and Q3 below, import the M4 data into SPSS and make sure your data and variable views are correct. See the "Codebook" tab in your M4 Excel data sheet to code variable "Values" in SPSS.

• All variables should be present in the "Data View."
• Each variable should be correctly configured in "Measure" under the "Variable View."
• All nominal/ordinal variables have the correct "Values" specified

Information about the data set for Q2 and Q3:A longitudinal project was conducted to study the executive and memory functions of elderly residents in a community. The participants were assessed every few years with a set of cognitive tests. Demographic and health information was also collected. The data set for Q1 and Q2 has been adapted from the data from that project. NOTE: Data prep may be required.

Q2. Perform and interpret a tTest with SPSS.(8 points)

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

Are the females and males significantly different in age ("Age")?

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

B. Create the null hypothesis from the research question. (Hint: Consider whether the hypotheses should be directional or non-directional for a two-tailed test.)

C. Run the analysis in SPSS and answer the following questions (C, D, E, and F) based on the analysis results. (Paste all the output tables from SPSS for this test. No points will be earned for the rest of the questions in Q1 if the output tables are not pasted or are incomplete).

D. Use the SPSS output to determine the effect size, Cohen's d,and explain what the effect size means in this context. Effect size must show in the SPSS table. Do not round, report all decimals from the table.

E. Report the ttest result in symbols according to the APA standards, including t statistic with degree of freedom, p value, and effect size d. (Hint: Present all the items in one single line, separated by commas, with the symbols italicized. Report "p

F. What is your decision about the null hypothesis (reject or fail to reject)? What is your rationale?

G. What is the answer to the research question?

Variable Name Gender Educ Age Meml Mem?2 Description Values Gender 1 - Female 2 - Male Education 0 - No college degree 1 - College degree and up Age at 1st test session Number of years Memory function at 1st test sessiol Test score Memory function at 2nd test sessic Test score \f\f