Stat 250, Section 701, Homework Assignment 4 (Due 6/15/98 in class)

• 1) [24 Points] Please work on the following textbook exercises in Blaisdell (Second edition):
  • Exercise 5.4, 5.5, 5.6, 5.7, 5.19, 5.20, 5.21 [1/2 Point each]
  • Exercise 5.26, 5.28, 5.32, 5.33, 5.41, 5.45 [1 Point each]
  • Exercise 5.56, 5.57, 5.60, 5.66 [1 Point each]
  • Exercise 6.2, 6.4, 6.6, 6.7, 6.8 [1/2 Point each]
  • Exercise 6.17, 6.18, 6.29, 6.35 [1 Point each]
  • Exercise 6.49, 6.53, 6.60, 6.63 [1 Point each]
  
  
• 2) [3 Points] For the "Student - Point Gain/Loss" example used in class on 6/9/98, draw a probability histogram, draw a spike graph, determine the cumulative probability function F(y), and draw a graph of F(y). Mark clearly which points are included / not included at particular positions in the graph of F(y).
  
  
• 3) [8 Points] Once again, you have to use a Web browser to answer this question. Use a search engine such as http://www.excite.com/, http://www.lycos.com/, or http://www.yahoo.com/ and search for Webpages that relate to statistics and your major subject.
  
  On top of these pages you usually have a box where you can type in the keywords you are looking for. You can type in a single keyword, multiple keywords separated by a blanc, e.g., kw1 kw2 kw3 (in this case, the search engine will look for kw1 or kw2 or kw3), and multiple keywords with a leading +, e.g., +kw1 +kw2 +kw3 (in this case, the search engine will look for kw1 and kw2 and kw3). If you try "text" where text appears in double quotes and may be a longer sentence, you should find pages that contain these words in exactly the same order (but eventually with a few other words inbetween).
  
  As an example, I used http://www.excite.com/ on 6/10/98 and tried
  • +Statistics +Nursing (20136 hits)
  • +Statistics +Nursing +Software (5447 hits)
  • +Statistics +Poetry (9434 hits)
  • "Government Statistics" (1000 hits)
  
  As an answer to this question
  • i) indicate which search engine you used and which keywords you have searched,
  • ii) indicate 3 to 5 interesting Web addresses that are related to statistics and your major subject (please list this subject again on your answer sheet), and
  • iii) visit the pages from ii) above and provide a 2 or 3 sentence summary on what this page is about, e.g., providing particular data, data about this subject (income distribution, number of people with this profession), information on (downloadable) software particularly helpful in this subject, information on new statistical methodology for this subject, etc.
  
  Please turn in your answer to this question on a separate sheet. I would appreciate a computer-written answer so I will be able to follow some of the links you indicated afterwards without having problems with individual handwritings (as we have seen, one small typo or letter I can not read and a Web page can not be found). Please make a copy (or second printout) so I can keep your sheet and can hopefully incorporate some of the things you suggest into my next Stat 250 class. Thanks a lot.