Tweet tweet: An article reported that of companies have Twitter accounts. An economist thinks the percentage is different at technology companies. She samples technology companies and finds that of them have Twitter accounts. Can she conclude that the percentage of technology companies that have Twitter accounts differs from ? Use the level of significance and the -value method with the TI-84 Plus calculator. Part: 0 / 5 0 of 5 Parts Complete Part 1 of 5 (a) State the appropriate null and alternate hypotheses. This hypothesis test is a test. Part: 1 / 5 1 of 5 Parts Complete Part 2 of 5 (b) Compute the value of the test statistic. Round the answer to two decimal places.
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Step 1
- Let p0 be the population proportion reported in the article for all companies. - Null hypothesis: H0: p = p0 - Alternative hypothesis: H1: p ≠ p0 (two-tailed) - This is a hypothesis test for a population proportion (z-test for a two-sided proportion). Show more…
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