You are testing a hypothesis at 𝛼 = 0.01. What is the probability of committing a Type I error?*99%10%1%0%None of the above

Step 1: Break Down the Problem

To solve the problem, we need to understand what a Type I error is in hypothesis testing. A Type I error occurs when we reject the null hypothesis when it is, in fact, true. The significance level, denoted by $\alpha$, represents the probability of committing a Type I error.

Step 2: Relevant Concepts

In this case, the significance level $\alpha$ has been given as 0.01. This represents the threshold at which we determine whether to reject the null hypothesis.

Step 3: Analysis and Detail

Since $\alpha$ is defined as the probability of committing a Type I error, if $\alpha = 0.01$, then the probability of committing a Type I error is simply 1% or 0.01.

Step 4: Verify and Summarize

Given the direct relationship between $\alpha$ and the probability of a Type I error, our findings verify that the probability of committing a Type I error is indeed equal to the given significance level.

Final Answer

The probability of committing a Type I error is $1\%$.