Sally’s Toyota Corolla is an old car but it served her well. Sheis planning to take a trip to the Grand Canyon from the east coast.Before starting the trip she checks the car to determine if the caris in good mechanical condition. She is knowledgeable about carsbut no expert. The null and alternative hypotheses are givenbelow.
H0: the Corolla is in good mechanical condition
Ha: the Corolla is not in good mechanical condition
(a) What would a Type-I error be in this situation?
(b) What would a type-II error be in this situation?
(c) Which error is more consequential in this situation andwhy?
(d) If Sally took the Corolla out to a certified mechanic for acheckout, what would be the likely impact on the magnitude of theType-I and Type-II errors and why?
