3. 為了解某新興社區居民對公共設施的潛在需求，該區戶政單位隨機從中抽取 64 人，得到平均數為 35.2 歲，標準差為 7.6 的結果。已知該年齡數據符合常態分配，請算出該區居民年齡的 95%信賴區間。 (5 分)

1. Social media are web-based communication tools that allow people to interact with people by sharing information, such as Instagram, YouTube, Facebook, Twitter, TikTok, LinkedIn, etc.. Social media is not all just for entertainment with friends, famous people, and brands one keeps an eye on, the power of social media is the ability to connect and share information with anyone in the world, or with many people simultaneously. With some problems popping up every day, social media can be a challenge to young users, such as spam, cyberbullying, self-image manipulation, information overload, fake news, privacy, emotional disturbance and so on. For this writing task, discuss the negative impacts of social media on youth? (500 words) (70%)

3. 為了解某新興社區居民對公共設施的潛在需求，該區戶政單位隨機從中抽取 64 人，得到平均數為 35.2 歲，標準差為 7.6 的結果。已知該年齡數據符合常態分配，請算出該區居民年齡的 95%信賴區間。 (5 分)

相關申論題

相關試卷