Question: A new commercial will be aired if the average preference for it exceeds 5.8 on a 7-point scale. A laboratory test of 151 respondents indicates

A new commercial will be aired if the average preference for it exceeds 5.8 on a 7-point scale. A laboratory test of 151 respondents indicates sample mean preference of 6 and SD = 2.5. Determine whether or not to air the new commercial with =.05.

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