You complete a hypothesis test using alpha = 05, and based on the evidence from

Question

You complete a hypothesis test using alpha = 05, and based on the evidence from the sample, your decision is to reject the null hypothesis. If the treatment actually does have an effect, which of the following is true? You have made a Type I error. You have made a Type II error. You might have made a Type I error, but the probability is only 5% at most. You have made the correct decision. By selecting a larger alpha level, a researcher is _______. attempting to make it easier to reject H_0 better able to detect a treatment effect increasing the risk of a Type I error All of the other options are the result of selecting a larger alpha level.

Explanation / Answer

1. since No test or critical region has been constructed, we have not done any error.

we can just say the probability of type I error that is rejecting the null hypethesis when it's true is 0.05

actually 0.05 is thelevel. and that is the highest probabiity of getting a type i error.

2. alpha debnotes the prpobability of wrongly rejecting null hypothesis. so, it makes rejecting easier if alpha is greater.

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