TABLE 9-2
A student claims that he can correctly identify whether a person is a business major or an agriculture major by the way the person dresses. Suppose in actuality that if someone is a business major, he can correctly identify that person as a business major 87% of the time. When a person is an agriculture major, the student will incorrectly identify that person as a business major 16% of the time. Presented with one person and asked to identify the major of this person (who is either a business or an agriculture major), he considers this to be a hypothesis test with the null hypothesis being that the person is a business major and the alternative that the person is an agriculture major.
-Referring to Table 9-2, what would be a Type I error?
A) Saying that the person is a business major when in fact the person is a business major
B) Saying that the person is a business major when in fact the person is an agriculture major
C) Saying that the person is an agriculture major when in fact the person is a business major
D) Saying that the person is an agriculture major when in fact the person is an agriculture major

Question

Quizplus · Accepted Answer

A Type I error occurs when the null hypothesis is rejected when it is actually true. Here, the null hypothesis is that the person is a business major. Thus, a Type I error would be incorrectly identifying a business major as an agriculture major.

TABLE 9-2 a Student Claims That He Can Correctly Identify Whether a Whether