are you likely to purchase an item promoted by a celebrity on a social media site?...

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are you likely to purchase an item promoted by a celebrity on a social media site?...

are you likely to purchase an item promoted by a celebrity on a social media site? according to a survey, 27% of social media users have made such a pirchase.

suppose that the survey had a sample size of n=700. construct a 90% confidence interval estimate.

math Statistics-And-Probability

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Answer 1

Answer #1

Given that, sample size (n) = 700 and sample proportion = 0.27

A 90% confidence level has significance level of 0.10 and critical value is,

The 90% confidence interval for the population proportion is,

Therefore, 90% confidence interval estimate is (0.2424, 0.2976).

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Answer 2

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