Home work Statistics 220

# Probability and Statistics for Engineering and the Sciences (with CD-ROM and InfoTrac )

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Homework Assignment Statistics 220, Fall 2005 Homework Assignment #1 Problems from Devore: 1. Problem 1.10 2. Problem 1.36 3. Problem 1.38 4. Problem 1.41 5. Problem 1.42 6. Problem 1.44 7. Problem 1.51 Homework Assignment #2 Due September 14 Show your work! Partial credit will be given on the basis of your work; writing down the answer without showing your work will get you no credit. Problems from Devore: 1. Exercise 2.6 2. Exercise 2.12 3. Exercise 2.14 4. Exercise 2.22 5. Exercise 2.24 6. Exercise 2.26 7. Exercise 2.30 8. Exercise 2.33 9. Exercise 2.34 10. Exercise 2.39 11. Exercise 2.44 Homework Assignment #3 Due September 21 Show your work! Partial credit will be given on the basis of your work; writing down the answer without showing your work will get you no credit. Problems from Devore: 1. Exercise 2.52 2. Exercise 2.58 3. Exercise 2.64

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4. Exercise 2.76 5. Exercise 2.78. Note that "iff" means "if and only if". 6. Exercise 2.81 7. Exercise 2.98 8. Exercise 2.102 Non-Devore problem: Show that if an event has probability 0 or probability 1, then it is independent of any other event. Homework Assignment #4 Due September 28 Show your work! Partial credit will be given on the basis of your work; writing down the answer without showing your work will get you no credit. Problems from Devore: 1. Exercise 3.28 2. Exercise 3.35 3. Exercise 3.38 4. Exercise 3.43. Part (d) is optional. 5. Exercise 3.46. You may assume that the different CD players are independent. 6. Exercise 3.56 7. Exercise 3.82 8. Exercise 3.86 Homework Assignment #5 Due October 5 Show your work! Partial credit will be given on the basis of your work; writing down the answer without showing your work will get you no credit. Non-Devore problem : Plutonium-239 is one of the substances used to make atomic (fission) bombs. It is radioactive, and the half-life is 24,110 years. That is, the probability that any given atom of plutonium has decayed after 24,110 years is exactly 0.5.
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