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Scenario:
A nurse in a long-term care facility suspects that an excess of bone
fractures is due to a particularly ill-trained or incompetent fellow
employee at the facility. Bone fracture cases rose sharply in the unit
following this person's employment, one year ago, and have remained high.
You obtain the data on bone fractures at the facility, reported by quarter
for the prior 5 years.
Questions:
- How might you determine whether there is a cluster in the last year in
this time series?
- How would you frame your alternative and null hypotheses?
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