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The mean age of YU students in a previous term was 26.6 years old. An instructor thinks the mean age for online students is older

The mean age of YU students in a previous term was 26.6 years old. An instructor thinks the mean age for online students is older than 26.6. She randomly surveys 57 online students and finds that the sample mean is 26.8 with a standard deviation of 2.1. Conduct a hypothesis test at 10%. Use P-value approach only.

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