Get a 90% confidence interval for the true percent of all potential customers will be interesting in
Get a 90% confidence interval for the true percent of all potential customers will be interesting in buying the product. [.076, .164] 3. If 15% of a sample of 80 students taking a certain college course have grades of A, find a 95% confidence interval for the true percentage of students of this course who receive As. [.072, .228] 4. A survey of 300 registered voters has 52% declaring they will vote for John Starr. Using 90% confidence, is Starr a sure winner?
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