# Statistics 201 Homework

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## MATH107 Introduction to Probability and Statistics - Spring 2011

Syllabus

Exams

Date | Topic | Homework | Due | |

1 | 01/13 | Chapters: 1 and 2 | read Chapters: 1 and 2 | 01/15 |

2 | 01/18 | Section 4.1: Experiments, sample spaces and events | read sections 4.1 and 4.2 | 01/20 |

3 | 01/20 | Section 4.2 An introduction to probability | HW#1: Chapter 4, Exercises: 4, 6, 8, 10, 16, 20, 28, 30, 34, 36, 38, 42, 44a-c, 48, 54 Solutions | 01/25 |

4 | 01/25 | Section 4.3: Counting techniques | read section 4.3 | 01/25 |

5 | 01/27 | Sections: 4.3 Counting rules and 4.4 Conditional probability | HW#2: Chapter 4, Exercises: 60,64, 66,78, 82, 92, 96, 98, 104, 114 Solutions | 02/01 |

6 | 02/01 | Section 4.5: Independence | HW#3: Chapter 4, Exercises: 118, 120, 128, 142, 144 Solutions | 02/03 |

7 | 02/03 | Review of Chapter 4 | Thursday, February 3: Extended office hours: 2PM-4PM, ADDITIONAL REVIEW SESSION: W201 6PM-8PM: HELP SESSION: MONDAY, FEBRUARY 7, 2PM-4PM, room N410 (BOYI YANG) | 02/03 |

8 | 02/08 | Midterm Exam #1: Chapter 4, Homework: #1, #2, #3 | Results: 20, 20, 20, 19, 13.5, 19.5, 10.5, 17.5, 20, 20, 18, 18.5, 13.5, 17, 17.5, 19.5, 19, 20, 13, 19, 19, 16.5, 14.5, 17, 13.5, 19.5, 15.5, 18.5, 20, 15, 17.5, 19.5, 16, 16, 14, 19, 20, 14, 18.5, 17, 20, 20, 16.5, 14.5, 18.5, 18, 17, 12.5, 19.5 Solutions | 02/08 |

9 | 02/10 | Sections 5.1 and 5.2: Random variables and probability distributions for discrete random variables | HW#4: Chapter 5: 2, 6, 8, 10, 12, 16, 18, 22, 24 Solutions | 02/14 |

10 | 02/15 | Section 5.3: Mean, variance and standard deviation for a discrete random variable | read sections 5.3, 5.4 and Chapter 3 (sections 3.1, 3.2 and 3.3) | 02/17 |

11 | 02/17 | Section 5.4: The binomial distribution | HW#5: Chapter 5: 28ab, 30ab, 38ab, 42ad, 46, 50, 52abc, 56abc, 60, 66 Solutions HELP SESSIONS: EVERY WEDNESDAY, FROM 3:30PM TO 5:30PM, ROOM N410 (BOYI YANG) | 02/22 |

12 | 02/22 | Section 5.5: Other discrete distributions: the geometric distribution | read Section 5.5 | 02/22 |

13 | 02/24 | Section 5.5: The Poisson and the hypergeometric distribution | HW#6: Chapter 5: 72, 74, 76, 78, 82, 84, 86, 90 Solutions | 03/01 |

14 | 03/01 | Sections 6.1 and 6.2: Probability distributions for continuous random variables and the Normal distribution | read Sections 6.1 and 6.2 | 03/01 |

15 | 03/03 | Sections 6.2 and 6.4: The Normal and the Exponential distribution | HW#7: Chapter 6: 2, 4, 6, 8, 10, 12, 20, 22, 26, 30, 34, 40, 46 Solutions | 03/15 |

-- | 03/07 | Spring Break | Have fun! | 03/11 |

16 | 03/15 | Review of Chapters 5 and 6 | Tuesday, March 15: Extended office hours: 2PM-4PM, ADDITIONAL REVIEW SESSION: W201 6PM-8PM Help session, Wednesday, March 16, 3:30PM-5:50PM, room N410 (Boyi Yang) | 03/15 |

17 | 03/17 | Midterm Exam #2 Chapter 5 and Chapter 6 (Homeworks: 4, 5, 6, and 7) | Results: 25, 25, 25 ,25, 25, 25, 25, 25, 25, 25, 24, 24.5, 23, 22.5, 23, 24.5, 11, 24, 22, 24, 21, 25, 24.5, 22.5, 16, 21, 24.5, 23.5, 20, 22.5, 23.5, 21.5, 17, 23.5, 22.5, 21, 22.5, 21, 25, 23.5, 20.5, 14.5, 24.5, 21.5, 13, 22.5, 16, 17 Solutions | 03/17 |

18 | 03/22 | Sections 7.1 and 7.2: Statistics, parameters, and sampling distributions. The sampling distribution of the sample mean | read Sections 7.1, 7.2 and 7.3 | 03/22 |

19 | 03/24 | Section 7.3: The distribution of the sample proportion | HW#8: Chapter 7: 2, 6, 8, 18, 20, 24, 26, 30, 46, 48, 50, 56 Solutions | 03/29 |

20 | 03/29 | Sections 8.1, 8.2 and 8.3: Point estimation. Confidence intervals for a population mean | Read Sections 8.1, 8.2 and 8.3 | 03/29 |

21 | 03/31 | Section 8.4: A large-sample confidence interval for a population proportion. | HW#9: Chapter 8: 6, 14abc, 16ab, 20, 22, 42abc, 46, 48, 56, 66, 68, 78, 82, 94, 102, 104, 108, 114 Solutions | 04/07 |

22 | 04/05 | Section 8.5: A confidence interval for a population variance. Sections 9.1 and 9.2: The parts of hypothesis test and choosing the alternative hypothesis. Hypothesis test errors. | Read Sections 9.1 and 9.2 | 04/05 |

23 | 04/07 | Sections 9.3, 9.4, 9.5, 9.6: Hypothesis tests concerning a population mean when variance is know and unknown, p-values. Large sample tests concerning a population proportion. | HW#10: Chapter 9: 4, 10, 12, 16, 26, 28, 48, 62, 68, 73, 86ace, 90, 102, 108, 116, 144ab, 154, 160 Solutions | 04/12 |

24 | 04/12 | Sections 9.7 and 10.5: Hypothesis tests concerning a population variance. Comparing two population variances. | Read Section 9.7 and Chapter 10 | 04/12 |

25 | 04/14 | Sections 10.1, 10.2, 10.3 and 10.4: Comparing two population means and proportions. | Review session at 6:00PM, Thursday, April 14, MSC Room W201, Monday April 18: consultation day, MSC E416 Additional help session: Monday, from 3:30PM to 5:30PM, ROOM N410 (Boyi Yang HW#11 (take home exam due Tuesday, April 19 at 11:30AM, 5 points - one point each problem ): Chapter 10: 28a, 36a, 58ab, 82, 104 Solutions | 04/19 |

26 | 04/19 | Midterm Exam #3 | Results: 22, 13, 29, 26, 24, 27.5, 30, 30, 25, 26, 26, 23, 22, 6, 30, 28, 20.5, 22, 28, 27, 23.5, 27, 22, 30, 28, 20.5, 28.5, 21, 30, 30, 30, 30, 29.5, 28, 26, 29.5, 29.5, 30, 28, 11, 29.5, 21.5, 28, 29, 30, 30, 25, 29 Solutions | 04/19 |

27 | 04/21 | A review of Midterm Exam #3. | Solutions of Midterm Exam #3 problems. Course evaluation. | 04/21 |

### ST 430: Probability and Mathematical Statistics II

Spring 2007

#### Mon, Wed and Fri, E202 Engineering, 11:00am-11:50am

#### Instructor:

- Richard A. Davis
- email: rdavis@stat.colostate.edu
- office: Rm 201 Statistics Building
- phone: 491-7321
- office hours:
- Tue: 4:00pm-5:00pm
- Also by appointment
- Additional office hours will be scheduled before midterms and the final exam

- Final exam is scheduled for Thursday May 10, 2007, 1:30-3:30.

Last update: 01/02/07

Note: you should visit this page on a regular basis

#### Announcements, news etc:

- [04/05] Practice Final click here.
- [04/05] Office hours during finals week are Tuesday 5-6:00 and Wednesday 4-5:00.
- [04/04] The Final is scheduled for Thursday May 10. It will be comprehensive covering material from Chapter 5 through Section 11.3. You will be given a table of moment-generating functions for various distributions and the look-up tables for the z, t, chi-square, and F distributions. You are allowed three "cheat-sheets" (8.5 by 11 inches), both sides. Please bring a calculator and paper for your answers.
- [04/10] Midterm 2, click here.
- [03/31] Practice Midterm 2, click here.
- There will be an extra office hour on Thursday April 5 in the library (room 213, our usual meeting place) of the Statistics Building.
- Dan will go over the practice midterm on Wedneday, April 4 in class.
- Dr. Dan Cooley will be substituting for me the week of April 2. He will have office hours on Tuesday April 3 at our usual time 4-5:00.
- [03/26] Midterm II is scheduled for Friday April 6. It will cover material through Section 7.5 of the text. You will be given a table of moment-generating functions for various distributions and the look-up tables for the z, t, chi-square, and F distributions. You are allowed two "cheat-sheets" (8.5 by 11 inches), both sides. Please bring a calculator and paper for your answers.
- Office hours on Tuesday, March 6, will be changed from 4-5:00 to 3:30-4:20.
- You may redo your midterm and turn it in on Feb 28. The results of this "retake" will be used to help students in bordline cases at the end of the semester.
- [02/26] Midterm 1, click here.
- [02/19] Practice Midterm 1, click here.
- [02/09] Midterm I is scheduled for Feb 23.
- [01/23] Office hours are cancled today.
- [01/22] Richard will be gone Monday and Tuesday. Josh French will lecture on Monday.

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