2 Proportions (Minitab): pooled-variance z test for H0 p₁ = p₂ with an unpooled CI for p₁ − p₂; method: 'fisher' gives Fisher's exact test instead (Minitab's option for small samples).
method: 'fisher'
Optional
2 Proportions (Minitab): pooled-variance z test for H0 p₁ = p₂ with an unpooled CI for p₁ − p₂;
method: 'fisher'gives Fisher's exact test instead (Minitab's option for small samples).