What does it mean to set alpha at .05? In other words: The probability of rejecting Ho being Ho true is 0.05 What is your null hypothesis? Alternate hypothesis? Is this a one-tailed or two-tailed hypothesis and why? What is the criterion z? Can you chec Pin It What does it mean to set alpha at .05? In other words: The probability of rejecting Ho being Ho true is 0.05 What is your null hypothesis? Alternate hypothesis? Is this a one-tailed or two-tailed hypothesis and why? What is the criterion z? Can you check this question ? Do you reject or fail to reject the null hypothesis?