A 2018 poll of 3619 randomly selected users of a social media site found that 2463 get most of their news about world events on t site. Research done in 2013 found that only 46% of all the site users reported getting their news about world events on this site. a. Does this sample give evidence that the proportion of site users who get their world news on this site has changed since 2013? Carry out a hypothesis test and use a 0.05 significance level. b. After conducting the hypothesis test, a further question one might ask is what proportion of all of the site users get most of their news about world events on the site in 2018. Use the sample data to construct a 95% confidence interval for the population proportion. How does your confidence interval support your hypothesis test conclusion? a. State the null and alternative hypotheses. Let p be the proportion of site users who get their world news on the site. Ho: P = Ha: P0.46 (Type integers or decimals. Do not round.) Compute the z-test statistic. 0.46 Z= (Round to two decimal places as needed.) Compute the p-value. p-value= (Round to three decimal places as needed.)

A 2018 poll of 3619 randomly selected users of a social media site found that 2463 get most of their news about world events on t site. Research done in 2013 found that only 46% of all the site users reported getting their news about world events on this site. a. Does this sample give evidence that the proportion of site users who get their world news on this site has changed since 2013? Carry out a hypothesis test and use a 0.05 significance level. b. After conducting the hypothesis test, a further question one might ask is what proportion of all of the site users get most of their news about world events on the site in 2018. Use the sample data to construct a 95% confidence interval for the population proportion. How does your confidence interval support your hypothesis test conclusion? a. State the null and alternative hypotheses. Let p be the proportion of site users who get their world news on the site. Ho: P = Ha: P0.46 (Type integers or decimals. Do not round.) Compute the z-test statistic. 0.46 Z= (Round to two decimal places as needed.) Compute the p-value. p-value= (Round to three decimal places as needed.)

College Algebra (MindTap Course List)

12th Edition

ISBN:9781305652231

Author:R. David Gustafson, Jeff Hughes

Publisher:R. David Gustafson, Jeff Hughes

Chapter8: Sequences, Series, And Probability

Section8.7: Probability

Problem 6E: List the sample space of each experiment. Tossing three coins

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