Question

A drug was developed that was suppose to reduce furballs in cats. A potential side effect

of the drug is fever. Listed below is a contingency table relating the treatment to the reaction

of a fever.

                Drug         Placebo

Fever        60           58

No Fever    48           25

a) (2 pts) Identify the explanatory variable and the responce variable?

Explanatory variable:

Response variable:

b) (2 pts) Provide a brief justification for your choice above.

c) (2 pts) What is the marginal fraction of fever?

d) (2 pts) What is the conditional fraction of fever with drug?

e) (2 pts) What is the conditional fraction of fever with placebo?

f) (2 pts) Does fever seem to be a major side effect of the drug? Explain

Answer 1

	drug	Placebo
Fever	60	58	118
No fever	48	25	73
	108	83	191

a) (2 pts) Identify the explanatory variable and the responce variable?

Explanatory variable: use of drug

Response variable: having fever

b) (2 pts) Provide a brief justification for your choice above.
because using drug can effect if a person has fever or not , but not vice-versa
c) (2 pts) What is the marginal fraction of fever?
= 118/191

d) (2 pts) What is the conditional fraction of fever with drug?
=60/108

e) (2 pts) What is the conditional fraction of fever with placebo?
= 58/83