A family therapist in a hospital wanted to know if patients with a terminal illness wanted to be informed of their true medical condition. The therapist wondered if a person’s age had a relationship with their desire to know or not know their true medical condition. Because of ethical constraints, the therapist asked visitors whether they would wish to be told if they had a terminal illness. What statistical test would you use and nine other pieces of information. The results are shown in the following table:

		Want to be informed	Do not want to be informed	Not sure
AGE
	<21	90	15	18
	22-35	56	24	19
	36-55	50	40	30
	>55	47	60	50

Pick 10

Level of data --

Parametric or nonparametric –

What statistical test would you perform?

Null hypothesis –

Research hypothesis – non directional –

Research hypothesis -- Directional –

What are the expected frequencies?

What alpha did you use and why?

How many degrees of freedom? Why? –

What is the calculated chi-square? (obtained) Did you use Yates? Why or why not? –

What is the critical value of chi-square? (Table F in Appendix C page 282)

Do you reject or accept the null?

What type of error would you have committed if you wrongly rejected or accepted?