A Contact Lens Wearer Read That the Producer of a New

question 10

Multiple Choice

A contact lens wearer read that the producer of a new contact lens boasts that their hypothesis $H _ { 0 } : \mu _ { \text {old } } - \mu _ { \text {new } } = 0$ is tested against the alternative $H _ { A } : \mu _ { \text {old } } - \mu _ { \text {new } } > 0$ . Which of the following would be a Type II error?

• A) Deciding that the new lenses are cheaper, when in fact they really are.
• B) Deciding that the new lenses are cheaper, when in fact they are not.
• C) Deciding that the new lenses are not really cheaper, when in fact they are.
• D) Deciding that the new lenses are not really cheaper, when in fact they are not.
• E) It does not matter.

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