According to recent data by the American Marketing​ Association, 76.5​%of people in the​ 18-24 age group used social media in 2017. You want to find out what the social media proportion is among your...


According to recent data by the American Marketing​ Association, 76.5​%of people in the​ 18-24 age group used social media in 2017. You want to find out what the social media proportion is among your classmates who are all between 18 and 24 years old. Suppose you obtain a random sample of
229 students and find that 202

students in this sample are active social media users. Complete parts a through c below.



a. Construct a 99​% confidence interval to estimate the actual proportion of social media users.

A 99​% confidence interval to estimate the actual proportion has a lower limit of------ and an upper limit of-------

​(Round to three decimal places as​ needed.)

b. What is the margin of error for this​ sample?



c. Is there evidence that this proportion matches that of the overall population based on the​ sample?



Jun 08, 2022
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