Two-sample comparison of proportions
Example: 15 sickle-cell carriers (heterozygotes) and 15 noncarriers were injected with malaria parasites.
2 of 15 carriers and 14 of 15 noncarriers contracted malaria.
Likelihoods: pC2(1–pC)13 & pN14(1–pN)
Assuming independence, multiply likelihoods: pC2(1–pC)13pN14(1–pN)