State the null and alternative hypotheses that would be used to test the following statements. These statements are the researchers claim, to be stated as the alternative hypothesis. All hypotheses should be expressed in terms of m, the population mean of interest.

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The mean age of patients in a hospital is greater than 60 years.
The mean caffeine content in a cup of coffee is less than 110 mg.
The average number of emergency room admissions per day differs from 20.