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The table below contains a certain social media company's penetration values (the percentage of a country's population that use this social media) for 14 countries.
The table below contains a certain social media company's penetration values (the percentage of a country's population that use this social media) for 14 countries. Complete parts a through c below 24 28 18 22 46 36 53 16 23 13 30 20 88 44 a. Construct a 99% confidence interval estimate for the population mean social media penetration The 99% confidence interval estimate is from to (Round to two decimal places as needed.) b. What assumption do you need to make about the population distribution to construct the interval in (a)? Choose the correct answer below A. The populations of the sampled countries are normally distributed B. The populations of the sampled countries follow the t distribution O C. The social media penetration is normally distributed D. The social media penetration follows the t distribution. c. Given the data presented, do you think the assumption needed in (a) is valid? Explain. Choose the correct answer below. O A. No, the data indicate the population distribution is skewed to the right O B. No, the data indicate the population distribution is skewed to the left O C. Yes, the data indicate the population distribution is approximately normal O D. Yes, the data indicate the population distribution approximately follows the t distribution
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