Indicate whether this is a one-tailed or two-tailed test.
Run a t-test with the variables class1 and educ.
Report whether the research hypothesis mentioned above is supported given (a = .01). (Hint: you need to compare the obtained t value with the critical value).
Report the p-value (i.e. "2-Tail Sig"). Should we reject the null hypothesis? Why?
Draw your conclusion about this study, i.e. interpret the statistic results.
(See the handout Exercise_for_HW8 for the instruction how to collapse “class” into a two-category “class1”.
To run the statistics on SPSS, take the following steps and click on those words typed below one at a time:
To run the t-Test using SPSS:
Analyze
Compare means
Independent-sample t test
(put "educ" in the box for "Test variable(s)", and "class1" in the box for "Grouping variables")
Define groups
(put 1 in "group 1", 2 in "group 2")
Continue
OK
Exercise #2:
Number of children (childs) varies by people’s attitudes toward capital punishment (cappun). Alpha = .05
Homework #8: Compare two means using a t-Test using SPSS Due: 11/02/20
Research hypothesis: men tend to work longer hours than women. Independent variable: sex; dependent variable: hrs1 Please note, this is a one-tailed test. But you still use the t(obtained) and the p-value on the SPSS output file for your decision making. As I indicated in my ppt notes, this is because a two-tailed test is more stringent than a one-tailed test. If a hypothesis can pass a two-tailed test criteria, it definitely passes a one-tailed test. Please choose your own alpha.
Use GSS2012 data to test the hypothesis.
To run the t-Test using SPSS:
Analyze
Compare means
Independent-sample t test
(put "hrs1" in the box for "Test variable(s)", and "sex" in the box for "Grouping variables")
Define groups
Sample Solution