Question
An article reported that 73% of companies have Twitter accounts. An economist thinks the percentage is...
An article reported that 73% of companies have Twitter accounts. An economist thinks the percentage is different at technology companies. She samples 70 technology companies and finds that 45 of them have Twitter accounts. Can she conclude that the percentage of technology companies that have Twitter accounts differs from 73%? Use the =α0.05 level of significance and the critical value method
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