You complete a hypothesis test using α = .05,and based on the evidence from the sample,your decision is to reject the null hypothesis.If the treatment actually has no effect,which of the following is true?
A)You have made a Type I error.
B)You have made a Type II error.
C)You might have made a Type I error, but the probability is only 5% at most.
D)You have made the correct decision.

Question

Quizplus · Accepted Answer

Rejecting the null hypothesis when it is actually true (no effect) is a Type I error, which occurs when the significance level (α) is exceeded. In this case, the significance level was set to α = .05, meaning there is a 5% chance of making a Type I error. Therefore, it is possible that a Type I error was made in this situation.

You Complete a Hypothesis Test Using α =