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homework_1_mcd-rev2.docxPut Name Here ____________________________
HOMEWORK ASSIGNMENT #1
Due Session 2 (11 Points)
1. (1 point) Define hypothesis: Hypothesis is the explanation to something based of test results
2. (1 point) Write an equation for the following scenario: The price of coffee beans is equal to the weight of the beans times the price of the beans per pound.
P(c) = price of coffee beans
W(b) = weight of beans
P(b) = price of beans per pound
Price of coffee beans = weight of beans multiplied by the price of beans per pound
Therefore:
P(c) = W(b) * P(b)
3. (0.5 points) Solve #2 if you are buying 4.5 pounds of coffee beans at $1.79/lb. Round off to the nearest cent.
4.5* 1.79/lb =$ 8.1/lb
4. (0.5 points) What is ?
= 8.9
5. (1 point) The time of an object to fall a distance d is given by
Find the time in seconds for a ball to drop 20 meters if g = 9.81 m/s2
Square root of 2*20/9.81
6. Watch the following video:
(2 point) How did Snow use the scientific method to improve sanitary conditions in 19th century London?
Questions 7 and 8 apply to the following data:
T (time, seconds) D (distance, meters)
0 0
2 142
4 244
6 306
8 328
10 310
12 252
14 154
16 16
7. (1 point) Plot the data
8. (0.5 point) What is the approximate distance at T=13 seconds?
9. (1.5 points) Which of the following statements could be tested scientifically to determine whether it is true or false? If it could be tested scientifically, briefly describe how.
a. Women are shorter than men
b. Unicorns are not extinct.
c. Metallica wrote beautiful music.
d. Football is a better sport than baseball.
10. (2 points) Find a research project that is now underway at a laboratory in Colorado. Write a paragraph describing the project. What is the researcher’s hypothesis?
