Answer the following statement(s) true (T) or false (F)
1. Silicone is a synthetic compound that is commonly used in lubricants, varnishes, and waterproofing products.
2. Silicon is a nonmetallic chemical element that is used in the manufacture of transistors and electronic computer chips.
3. The most widely used form of glass is soda-lime-silica glass.
4. Metallic oxides are added to give glass various colors.
5. Fiber optics is the branch of science that deals with transmitting data, voice, and images through thin plastic or glass fibers.
1. True
2. True
3. True
4. True
5. True
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Answer the following statement(s) true (T) or false (F)
Ribbands and strongbacks are similar where the ribband is used to carry more load.
In a field experiment you noted that 300 tons of water was transpired to produce 1 ton of corn (dry weight). If alfalfa had been grown in the same field instead of corn, which of the following would most likely have been the amount of water transpired?
A) 500 tons B) 275 tons C) 300 tons D) 250 tons E) depends on the climate in the area of the experiment
Following are interest rates (annual percentage rates) for a 30-year fixed-rate mortgage from a sample of lenders in Colorado on May 3, 2013. Assume that the population is normally distributed.
Construct a 95% confidence interval for the population variance 
Vertical pipe runs should be supported at each floor level using _____.
a. clevis hangers b. riser clamps c. beam clamps d. trapeze hangers