17. A psychologist wants to test if men and women report
different political attitudes. A sample of 15 men and a sample of
15 women are obtained. Each participant completes a measure of
political liberalism, with higher scores representing more liberal
political attitudes. The data are as follows:
Men
Women .
mean =
36
mean = 37
SS =
210
SS = 250
- State the hypotheses (i) formally with symbols and (ii) in
words explain what the hypotheses predict in terms of the
independent and dependent variables.
- Sketch the distribution and locate the critical region.
- Compute the test statistic.
- Make a decision THREE WAYS: (i) Make a decision regarding
H0 (ii) State the results formally, using symbols and
statistical jargon (iii) State the results in jargon-free, regular
English -- what would you tell your grandmother?
- Calculate the effect size (Cohen’s d)
- Construct a 95% Confidence Interval for the unknown population
parameter.
**** remember: Talk about DIFFERENCS not effects *********