ANSWER
[tex] \frac{1}{3} [/tex]
EXPLANATION
We want to find an odds ratio from a given probability, which is
[tex] \frac{1}{4} [/tex]
We subtract the numerator 1 from the denominator 4 to obtain
[tex]4- 1= 3[/tex]
The answer is the number of unfavorable outcomes.
The Odds can then be expressed as
[tex]1 : 3[/tex]
The ratio of favourable outcomes to unfavorable outcomes.
Or
[tex] \frac{1}{3} [/tex]
