Question

Part C is the one I would like assistance with. Also please make sure this is shown within decimal format only and clear

Are you likely to purchase an item promoted by a celebrity on a social media site? According to a survey, 26% of social media users have made such a purchase. Complete parts (a) through (d) below. a. Suppose hat the survey had a sample size o n- 000 onstruct a 95% confidence interval estimate or he op a on proportion o social e a users ha have urcase an e omote a celebrit ,on a social media site 0.2328 Ss 0.2872 (Type an integer or a decimal. Round to four decimal places as needed.) b. Based on (a), can you claim that more than a quarter of all social media users have purchased an item promoted by a celebrity on a social media site? A. Yes, with 95% confidence because the sample proportion is greater than a quarter, and it falls within the limits of the confidence interval estimate B. No, because the confidence interval contains proportion values that are less than 0.25. C. Yes, with 95% confidence because all the values contained in the confidence interval are greater than 0.25. ○ D No, because a 95% confidence interval is not indicative of a guarantee. A 99.9% confidence interval would be needed to make such a claim. c. Repeat parts (a) and (b), assuming that the survey had a sample size of n-11,000 Construct a 95% confidence interval estimate for the population proportion of social media users that have purchased an item promoted by a celebrity on a social media site. (Type an integer or a decimal. Round to four decimal places as needed.)

Answer 1

e.26 ± r.qbro-o, 38リ -(0.2 3 나 , a«Anj