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AGE | MINDTAP Q. Search this course Assignment ECO 250 Inment: Chapter 8 Assignment ECO 250 Assignment Score: 6.66% Save Submit Assignment for Grading tions Exercise 08.15 Algo (Population Mean: Sigma Unknown) Question 2 of 15 > Hint(s) | Check My Work (1 remaining) nonice X O Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made during the week. A sample of 65 weekly reports showed a sample mean of 18.5 customer contacts per week. The sample standard deviation was 5.3. Provide 90% and 95% confidence intervals for the population mean number of weekly customer contacts for the sales personnel. 90% confidence interval, to 2 decimals: O O 95% confidence interval, to 2 decimals: O O O Hide Feedback X O Incorrect O