Question

Dr. Grey wanted to see if doctors prescribed different treatments for OCD for male patients compared to females. Please use the following frequency tables for the data collected by Dr. Grey. SHOW ALL STEPS

Contingency table of Observed and Expected Frequencies of the different treatments (Drug vs. Cognitive Therapy) prescribed for patients with OCD.
Therapy Totals		Drug		Cognitive Therapy		Total
Gender of Patient		Observed	Expected	Observed	Expected
	Man	20		10		30
	Woman	15		15		30
	Total	35		25		60

What is the research hypothesis?

A) Not all ρ's are the same

B) ρ ≠ρ ≠ρ ≠ ρ

C) The same treatments for OCD are given to men and women no differences in frequency

D) ρ = ρ = ρ = ρ

Answer 1

Dr. Grey wanted to see if doctors prescribed different treatments for OCD for male patients compared to females. So, this test is used to check whethere there is any difference between the observed and expected frequencies

option B and D are incorrect because these hypotheses are used in case of testing for relationship

option A is correct because it is alternative hypothesis to test whether there is any difference between frequencies

option C is incorrect because it is null hypothesis, but not research or alternate hypothesis