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Marine scientists categorize signature whistles of bottlenose dolphins by typetype a, typeb, typec, etc. In one study of a sample of 185 whistles emitted from

Marine scientists categorize signature whistles of bottlenose dolphins by typetype a, typeb, typec, etc. In one study of a sample of 185 whistles emitted from bottlenose dolphins incaptivity, 96 were categorized as type a whistles.

a. Estimate the true proportion of bottlenose dolphin signature whistles that are type a whistles. Use a 99% confidence interval.

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