An article reported that73% of companies have Twitter accounts. An economist thinks the percentage is higher at technology companies. She samples70 technology companies and finds that57 of them have Twitter accounts. Can she conclude that more than73%of technology companies have Twitter accounts? Use the = 0.05level of significance and theP-valuemethod.

1. State the null and alternate hypotheses.
2. Is this hypothesis test right-tailed, left-tailed, or two-tailed?