Question

2.3.10 In Example 1.1, we looked at a study to investigate whether dolphins could communicate. In doing so, we tested whether Buzz, one of the dolphins, could push the correct button more than 50% of the time in the long run. a. Describe what a Type I error would be in this study. b. Describe what a Type II error would be in this study.

Answer 1

Answer:

a. When we reject null although it was true.

b. When we fail to reject null although it was false.

Explanation:

A type I error occurs when we reject a null hypothesis when it is actually true.

Thus in this case Type I error will occurs when we have a strong evidence that Buzz a dolphin could communicate. But we still reject this and conclude that it cannot communicate and we are only guessing.

Type II error occurs when we fail to reject a null hypothesis although it is false. So when we do not have a strong evidence that Buzz the dolphin can communicate and we still conclude that it can, it is said that we have incurred type II error.