What logical or ethical problems do you see in these hypothetical scenarios?

a. Dolon Privacy Consultants concludes that its employees are not loyal because a few samples of employee e-mails contained comments critical of the company's management.

b. Calchas Financial Advisors issues a glowing report of its new stock market forecasting system, based on testimonials of five happy customers.

c. Five sanitation crew members at Malcheon Hospital are asked to try a new cleaning solvent to see if it has any allergic or other harmful side effects.

d. A consumer group rates a new personal watercraft from Thetis Aquatic Conveyances as "Unacceptable" because two Ohio teens lost control and crashed into a dock.

Reference "Applied Statistics in Business and Economics" by David Doane