`(fisher-exact-test a b c d #:tails)`procedureGiven a 2x2 contingency table, returns a p value using Fisher's exact test.

`a`and`b`form the first row of the contingency table,`c`and`d`the second row.

`(fisher-exact-test a b c d #:tails)`procedureGiven a 2x2 contingency table, returns a p value using Fisher's exact test.

`a`and`b`form the first row of the contingency table,`c`and`d`the second row.