In the past, 75% of the tourists who visited Chattanooga went to see Rock City. The management

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Question:

In the past, 75% of the tourists who visited Chattanooga went to see Rock City. The management of Rock City recently undertook an extensive promotional campaign. They are interested in determining whether the promotional campaign actually increased the proportion of tourists visiting Rock City. The correct set of hypotheses is
Ho: p > 0.75; Ha: p <= 0.75
Ho: p < 0.75; Ha: p >= 0.75
Ho: p >= 0.75; Ha: p < 0.75
Ho: p <= 0.75; Ha: p > 0.75