A Contact Lens Wearer Read That the Producer of a New

question 6

Multiple Choice

A contact lens wearer read that the producer of a new contact lens boasts that their lenses are cheaper than contact lenses from another popular company. The null hypothesis H0: μold - μnew = 0 is tested against the alternative HA: μold - μnew > 0. Which of the following would be a Type II error?

• A) Deciding that the new lenses are more expensive, when in fact they are cheaper.
• B) Deciding that, on average, the new lenses are cheaper, when in fact they are not.
• C) Deciding that, on average, the new lenses are not really cheaper, when in fact they are.
• D) Deciding that the prices of new lenses are exactly the same as the old ones, when in fact they are not.
• E) Deciding that the prices of old lenses are exactly the same as the new ones, when in fact they are not.