STAT 200 how to write the appropriate null

how to write the appropriate null and alternative hypothesis for the following1. World campus wants to know if more than half of their students work full-time.2. On a given weight-loss plan, is the average change in weight negative?3. Is the mean age of all Penn State first year undergraduate students less than 24 years?4. Do students at XYZ High school do better than the national average of 550 on the Verbal section of the SAT?


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