Q. The Lowry Research Centre has conducted extensive research on social media usage. Of particular interest was the social media preference of young adults (those aged 18-24). Of the 3500 respondents, 1250 young adults indicated that their preferred social media app was "TikTok"

(i) State the name and the value of the statistic that is best estimate for the proportion of all young adults whose preferred social media app is "TikTok".

(ii) Use the Excel macro provided this session to determine a 95% confidence interval for the proportion of young adults whose preferred social media app is "TikTok". State your confidence interval in a well-formed sentence.

(iii) Check to determine if the required conditions for this statistical inference employed in (ii) are satisfied.

(iv) Based on the research from the Lowry Research Centre a leading magazine decides to publish an article and use the headline, 'Majority prefer TikTok'. Give two reasons why this headline is misleading or incorrect from a statistical perspective.