In 1992, a survey of 50 municipal hospitals revealed an average occupancy rate of 73.6 percent, and the sample standard deviation was 18.2 percent. Another survey of 75 municipal hospitals in 1995 found an average occupancy rate of 68.9 percent, and the sample standard deviation was 19.7 percent. At α = 0.10, can we conclude that the average occupancy rate changed signifi cantly during the 3 years between surveys?
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