Please explain steps.

4. An article reported that 80% of companies have Twitter accounts. An economist thinks the percentage is higher at technology companies. She samples 70 technology companies and finds that 60 of them have Twitter accounts. Can she conclude that more than 80% of technology companies have Twitter accounts? Use the a = 0.05 level of significance and the P-value method. a. State the appropriate null and alternate hypotheses. b. Determine type of the test. c. Compute the value of the test statistic and show the P-value on the curve. d. State a conclusion and interpret it