Question

A supplier has agreed to provide the manager of a large office complex with lightbulbs that he claims will last more than 1,000 hours. Twenty bulbs are randomly selected and tested by the office complex's maintenance department.   Describe the Type I error that can be made in relation to this context of the number of hours the bulb lasted if testing this claim through a formal hypothesis test on collected sample data.

Answer 1

Ha: mu > 1000

type I error occurs when one incorrectly rejects H0
Here, type I error occurs if we conclude that the bulbs last more than 100 hours though actually it is not the case.