The average American sees 3.9 movies at the theater each year. A curious student polls 30 friends and family over the course of a week. He finds that his friends have seen an average of 4.5 movies with a standard deviation of 1.2 movies.
-Find and interpret a 95% confidence interval for this sample.

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The Answer of The average American sees 3.9 movies at the theater each year. A curious student polls 30 friends and family over the course of a week. He finds that his friends have seen an average of 4.5 movies with a standard deviation of 1.2 movies.
-Find and interpret a 95% confidence interval for this sample.

The Average American Sees 3