Question: Question: Is this statement a possible null hypothesis or research hypothesis? The mean age in the population of undergraduate students is greater than 19 years.

Question:

Is this statement a possible null hypothesis or research hypothesis?

"The mean age in the population of undergraduate students is greater than 19 years."

I've been taught that null hypotheses and research hypotheses must be statements that compare groups. I'm confused because this statement does not compare more than one group.

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