Question

The probability of committing a type I error is equal to which of the following?

A) The significance level (α)
B) The power of the test (1-β)
C) The confidence level (1-α)
D) None of the above

Answer 1

The probability of committing a Type I error in hypothesis testing is equal to the significance level (α).

Step-by-step explanation:

The probability of committing a Type I error in hypothesis testing is equal to the significance level (α). Hence, the correct answer is A) The significance level (α).

A Type I error occurs when we reject the null hypothesis when it is actually true. This means that we mistakenly conclude that there is evidence for the alternative hypothesis when there really isn't. The significance level, denoted by α, is the probability of making this Type I error.