diff --git a/hubbard_2020_failure.md b/hubbard_2020_failure.md
index 0fab810..5e2538e 100644
--- a/hubbard_2020_failure.md
+++ b/hubbard_2020_failure.md
@@ -250,3 +250,187 @@ by insisting the standards move in this direction.
 #### Notes
 
 ## Appendix: Additional Calibration Tests And Answers
+
+### Calibration Test for Ranges: A
+
+1. How many feet tall is the Hoover Dam?
+2. How many inches long is a \$20 bill?
+3. What percentage of aluminum is recycled in the United States?
+4. When was Elvis Presley born?
+5. What percentage of the atmosphere is oxygen by weight?
+6. What is the latitude of New Orleans? \[_Hint_: Latitude is 0 degrees at the equator and 90 degrees at the North Pole.\]
+7. In 1913, the United States military owned how many airplanes?
+8. The first European printing press was invented in what year?
+9. What percentage of all electricity consumed in US households was used by kitchen appliances in 2001?
+10. How many miles tall is Mount Everest?
+11. How long is Iraq\'s border with Iran in kilometers?
+12. How many miles long is the Nile?
+13. In what year was Harvard founded?
+14. What is the wingspan (in feet) of a Boeing 747 jumbo jet?
+15. How many soldiers were in a Roman legion?
+16. What is the average temperature of the abyssal zone (where the oceans are more than 6,500 feet deep) in degrees F?
+17. How many feet long is the Space Shuttle _Orbiter_ (excluding the external tank)?
+18. In what year did Jules Verne publish _20,000 Leagues Under the Sea_?
+19. How wide is the goal in field hockey (in feet)?
+20. The Roman Coliseum held how many spectators?
+
+### Answers to Calibration Test for Ranges: A
+
+1. 726 feet
+2. 63/16ths (6.1417) inches
+3. 45 percent
+4. 1935
+5. 21 percent
+6. 29.95
+7. 23
+8. 1450
+9. 26.7 percent
+10. 5.5 miles
+11. 1,458 kilometers
+12. 4,160 miles
+13. 1636
+14. 196 feet
+15. 6,000
+16. 39 F
+17. 122 feet
+18. 1870
+19. 12 feet
+20. 50,000
+
+### Calibration Test for Ranges: B
+
+1. The first probe to land on Mars, _Viking 1,_ landed there in what year?
+2. How old was the youngest person to fly into space?
+3. How many meters tall is the Sears Tower?
+4. What was the maximum altitude of the _Breitling Orbiter 3,_ the first balloon to circumnavigate the globe, in miles?
+5. On average, what percentage of the total software development project effort is spent in design?
+6. How many people were permanently evacuated after the Chernobyl nuclear power plant accident?
+7. How many feet long were the largest airships?
+8. How many miles is the flying distance from San Francisco to Honolulu?
+9. The fastest bird, the falcon, can fly at a speed of how many miles per hour in a dive?
+10. In what year was the double helix structure of DNA discovered?
+11. How many yards wide is a football field?
+12. What was the percentage growth in internet hosts from 1996 to 1997?
+13. How many calories are in 8 ounces of orange juice?
+14. How fast would you have to travel at sea level to break the sound barrier (in mph)?
+15. How many years was Nelson Mandela in prison?
+16. What is the average daily calorie intake in developed countries?
+17. In 1994, how many nations were members of the United Nations?
+18. The Audubon Society was formed in the United States in what year?
+19. How many feet high is the world\'s highest waterfall (Angel Falls, Venezuela)?
+20. How deep beneath the sea was the Titanic found (in miles)?
+
+### Answers to Calibration Test for Ranges: B
+
+1. 1976
+2. 26
+3. 443 meters
+4. 6.9 miles
+5. 20 percent
+6. 350,000
+7. 803 feet
+8. 2,394 miles
+9. 200 mph
+10. 1953
+11. 53.3 yards
+12. 70 percent
+13. 120
+14. 760 mph
+15. 27
+16. 3,300 calories
+17. 184
+18. 1905
+19. 3,212 feet
+20. 3.36 miles
+
+### Calibration Test for Binary: A
+
+1. The Lincoln Highway was the first paved road in the United States, and it ran from Chicago to San Francisco.
+2. The Silk Road joined the two ancient kingdoms of China and Afghanistan.
+3. More American homes have microwaves than telephones.
+4. _Doric_ is an architectural term for a shape of roof.
+5. The World Tourism Organization predicts that Europe will still be the most popular tourist destination in 2020.
+6. Germany was the second country to develop atomic weapons.
+7. A hockey puck will fit in a golf hole.
+8. The Sioux were one of the Plains Indian tribes.
+9. To a physicist, _plasma_ is a type of rock.
+10. The Hundred Years\' War was actually more than a century long.
+11. Most of the fresh water on Earth is in the polar ice caps.
+12. The Academy Awards ("Oscars") began over a century ago.
+13. There are fewer than two hundred billionaires in the world.
+14. In Excel, \^ means "take to the power of."
+15. The average annual salary of airline captains is over \$150,000.
+16. By 1997, Bill Gates was worth more than \$10 billion.
+17. Cannons were used in European warfare by the eleventh century.
+18. Anchorage is the capital of Alaska.
+19. Washington, Jefferson, Lincoln, and Grant are the four presidents whose heads are sculpted into Mount Rushmore.
+20. John Wiley & Sons is not the largest book publisher.
+
+### Answers for Calibration Test Binary: A
+
+1. FALSE
+2. FALSE
+3. FALSE
+4. FALSE
+5. TRUE
+6. FALSE
+7. TRUE
+8. TRUE
+9. FALSE
+10. TRUE
+11. TRUE
+12. FALSE
+13. FALSE
+14. TRUE
+15. FALSE
+16. TRUE
+17. FALSE
+18. FALSE
+19. FALSE
+20. TRUE
+
+### Calibration Test for Binary: B
+
+1. Jupiter\'s "Great Red Spot" is larger than Earth.
+2. The Brooklyn Dodgers\' name was short for "trolley car dodgers."
+3. _Hypersonic_ is faster than _subsonic_.
+4. A _polygon_ is three-dimensional and a _polyhedron_ is two-dimensional.
+5. A 1-watt electric motor produces 1 horsepower.
+6. Chicago is more populous than Boston.
+7. In 2005, WalMart sales dropped below \$100 billion. > 80% 90% 100%
+8. Post-it Notes were invented by 3M.
+9. Alfred Nobel, whose fortune endows the Nobel Peace Prize, made his fortune in oil and explosives.
+10. A BTU is a measure of heat.
+11. The winner of the first Indianapolis 500 clocked an average speed of under 100 mph.
+12. Microsoft has more employees than IBM.
+13. Romania borders Hungary.
+14. Idaho is larger (in area) than Iraq.
+15. Casablanca is on the African continent.
+16. The first manmade plastic was invented in the nineteenth century.
+17. A chamois is an alpine animal.
+18. The base of a pyramid is in the shape of a square.
+19. Stonehenge is located on the main British island.
+20. Computer processors double in power every three months or less.
+
+### Answers for Calibration Test Binary: B
+
+1. TRUE
+2. TRUE
+3. TRUE
+4. FALSE
+5. FALSE
+6. TRUE
+7. FALSE
+8. TRUE
+9. TRUE
+10. TRUE
+11. TRUE
+12. FALSE
+13. TRUE
+14. FALSE
+15. TRUE
+16. TRUE
+17. TRUE
+18. TRUE
+19. TRUE
+20. FALSE