Consider Table on the summary of patient satisfaction ratings. The percentages in each rating category are based on a response from a total of 200 patients from a prior year. For the item waiting time prior to being seen by a physician, consider the combined proportion of patients who are satisfied, that is, includes those in the category of very satisfied or satisfied.
Suppose that, based on a survey during the current year, out of a total of 400 patients, 85% of them expressed a rating of very satisfied or satisfied.
Can we conclude that there has been an increase in the overall proportion of satisfied patients from a prior year to the current year? Use a level of significance of 5%.
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Table - Patient Satisfaction Data on Timeliness of Operations
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Rating
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Item
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1
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2
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3
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4
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5
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1. Waiting time at registration
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10
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40
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20
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20
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10
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2. Time to occupy bed
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10
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30
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30
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20
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10
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3. Waiting time prior to being seen by a physician
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10
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5
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10
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40
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35
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4. Timeliness of nurse visits
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30
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20
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20
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20
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10
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5. Waiting time to be checked out
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20
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30
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10
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30
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10
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