Which of the following is correct Select one a When sample s

Which of the following is correct?

Select one:

a. When sample size increases, both and may decrease.

b. Type II error can only occur when you reject H₀.

c. Type I error can only occur if you fail to reject H₀.

d. The level of significance is the probability of Type II error.

Solution

Type I error is the probability of rejecting true null hypothesis . So it can occur only if we reject the null hypothesis.

And type II error is the probability of fail to reject false null hypothesis. So it can occur only if we fail to reject the null hypothesis.

Level of significance is known as Type I error.

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Option (a) is correct.