Ch. 6 - Rejection Threshold => 1-alpha/2 ao invés de alpha/2 no slide 8

[tatatupi]

Alterar na linha 166:

De: We'll reject $H_0$ at the $(1-\alpha)$ confidence level if $|t0|\geq t{\alpha/2; (n_1+n_2-2)}$

Para: We'll reject $H_0$ at the $(1-\alpha)$ confidence level if $|t0|\geq t{1-\alpha/2; (n_1+n_2-2)}$

[fcampelo]

Fixed, thanks!