SRS of 200 people are selected to study the effects of Olestra (a fat substitute) and vitamin K content. Olestra is suspected of stripping vitamin K from the digestive system. Foods high in Vitamin K are green leafy foods like spinach, green tea, brussel sprouts, etc. The researchers want to give half of the people Olestra (in pill form) each day for 3 weeks and the other half none. They then want to compare the amount of Vitamin K in the bloodstream. a. Design an experiment using blocking to control an apparent lurking variable. b. Could the experiment be done double-blind? Explain. c. Considering your design above and if there was significantly less Vitamin K in the Olestra group could we say that it is attributed to the Olestra? Explain. 3. Design a matched pairs experiment (with washout) to find out if the herb ginkgo biloba improves mental ability. Use a labeled diagram