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Formulate and test the appropriate hypothesis

A telephone company estimates that 30% of its customers are interested in high-speed Internet Service. To test this estimate, a random sample of 100 customers were selected and the results showed that 25 were interested in high-speed Internet Service. Can it be concluded that the percentage of customers interested in high-speed internet service is different from 30%. Formulate and test the appropriate hypothesis at a 5% significance level. Use the critical value approach.
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