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As a result of complaints from bothstudentsandfaculty aboutlateness, the registrar at a largeuniversity is ready to undertake a study to determine whetherthescheduledbreak betweenclassesshouldbechanged. Untilnow, the

As a result of complaints from bothstudentsandfaculty aboutlateness, the registrar at a largeuniversity is ready to undertake a study to determine whetherthescheduledbreak betweenclassesshouldbechanged. Untilnow, the registrar has believed thatthereshouldbe 15 minutesbetweenscheduledclasses.

What are the null and alternativehypotheses?

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