Internet: YouTube One of the most popular online platforms for people to post video content is YouTube.

Whenever a new video is posted, viewers have the option to “Like” or “Dislike” the video based on the content being shown. Suppose a content creator posted two videos. The first was a travel video about food which received 139 “Likes” out of 200. The second was a video about animals that received 157 “Likes” out of 210.

(a) Check Requirements Is it appropriate to use a normal distribution to approximate the pˆ pˆ 1 2 2 distribution? Explain.

(b) Find a 90% confidence interval for pˆ pˆ 1 2 2.

(c) Interpretation Based on the confidence interval you computed, can you be 90% confident that p1 is less than p2? Explain.

(d) Interpretation Based on the confidence interval you computed, which video content should the content creator post more of?

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