Compute the standard error of the sample proportion

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Assignment:

Suppose Verizon is interested in knowing how consumers perceive their new iPhone11 advertisement. They conduct a marketing research by looking at different social media mentions of the term "Verizon + iPhonell + ad" and check the % of those mentions that carry positive sentiments.

They sampled a total of 800 social media mentions. Of those mentions, 520 of them are positive, and the rest of them are somewhat negative or neutral.

(a) What is the sample proportion of social media mentions that are positive?

(b) Compute the standard error of the sample proportion.

(c) Construct a 95% confidence interval of the % of social media mentions that carry positive sentiments.

Reference no: EM133946044

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