Polly wants to test the relationship between the months Marc

Polly wants to test the relationship between the months March through May, typically considered silverbacks’ mating season, and whether a given silverback has actually mated on a given day.

Polly has built a contingency table with one category Season which has the values Mating and Non-Mating, and one other category Behaviorwhich has the values Mated and Didn’t Mate, as shown below.

Behavior

Polly is performing Fisher’s Exact Test, with a directional alternative hypothesis that March through May makes mating behavior less likely.

What is the p-value for Polly\'s test? Round to the nearest percent.

6%

12%

88%

94%

Solution

Fisher\'s Exact Test for Count Data

data: x
p-value = 0.1152
alternative hypothesis: true odds ratio is less than 1
95 percent confidence interval:
0.000000 1.175829
sample estimates:
odds ratio
0.6025961

ANS>p-value for Polly\'s test=12%