The bag-of-words model is appropriate for spam detection but not for text analytics

Saving money in a hospital can be accomplished in part by

A. raising surgery prices. B. Eliminating the expensive Japanese technique of Kaizen. C. improving the supply chain. D. buying the tools that each doctor requests.

A random sample of 25 employees of a local company has been taken. A 95% confidence interval estimate for the mean systolic blood pressure for all employees of the company is 123 to 139 . Which of the following statements is valid? a. 95% of the sample of employees has a systolic blood pressure between 123 and 139

b. If the sampling procedure were repeated many times, 95% of the resulting confidence intervals would contain the population mean systolic blood pressure. c. 95% of the population of employees has a systolic blood pressure between 123 and 139. d. If the sampling procedure were repeated many times, 95% of the sample means would be between 123 and 139.