mentation/level of cooperation	mentation/level of cooperation age 17 to25scores	mentation/level of cooperation age 26 to 45 scores	mentation/level of cooperation age 46 to 79 scores	mentation/level of cooperation age +/>80 scores
10	10
8			8
10			10
7		7
8	8
9			9
9		9
10		10
9			9
3			3
10		10
8			8
6			6
6		6
10		10
9	9
10			10
10			10
6		6
7			7
8		8
6			6
7	7
3				3
7			7
10		10
10			10
8			8
7			7
10			10
7			7
10		10
8		8
9			9
3			3
5			5
7			7
10	10
9		9
6	6
7			7
8		8
7			7
10			10
8			8
6			6
6			6
1			1
8			8
9			9
2			2
4			4
6				6
2				2
9			9
10			10
10	10
9			9
9			9
10			10
6			6
5				5
2				2
7			7
7			7
8	8
6			6
10			10
5			5
7		7
0 = unable to cooperate
to 10 fully able to cooperate in equal increments of 1

USE ANOVA SINGLE FACTOR

The research question is "Do patients in the older age groups have lower levels of mentation/ level of cooperation than patients in younger age groups"?

A) write out the null hypothesis. write out the research hypothesis. Identify the target population. Identify the sample population. Identify the independent variable or factor and level of measure. Identify the dependent variable and the level of measure. write out the test to be done and provide your rationale. write out the level of significance for the test. State your choice of a one or two tailed test Provide your rationale.

1. Conduct the test in excel and report the calculated test statistic, for either the one-tailed or two- tailed test, as per your choice above. include the excel output.

2. Calculate and state the degrees of freedom for this test and explain how that number was derived (show your calculation).

3. write out the critical value to be exceeded by the calculated t test statistic, for either the one-tailed or two- tailed test as per your choice above, from the excel output. (Look for this critical value manually in the textbook table for t test statistics by using the one or two tailed test, df and alpha which you determined, in order to compare the calculated t test statistic value from your analysis with the critical value as listed in the table, which will confirm your computer critical value.) (critical value to be exceeded).

4. Compare the calculated t test statistic with the level of significance at which the test statistic fell under the curve; and make a decision to accept or reject the null hypothesis.

5. State the p value at which the test statistic was located under the curve. Report as test statistic score = , df = , p =

6. write out 3 decisions: i) Are the results statistically significant? ii) Do you accept or reject the null hypothesis? iii) What do you conclude about the research hypothesis?

7. Discuss (interpret) your findings. (Interpretation includes discussion of descriptive analyses with all relevant data outputs, possible error sources, generalizability and critique of design that would suggest bias).