Stat 322 – HW 1

Due Friday, Jan. 12

1) Complete the Stat 322 Questionnaire in Blackboard (under the Assignments button).

2) Find 2 uses of statistics (e.g., in the news, on the web, from other courses). For each, write a paragraph summarizing the use of statistics (what did they do) and then asking a few questions about it, e.g., what additional information do you want to know? Be sure to cite the sources and dates of the articles.

3) (p. 127) problem 54. If you use Minitab, include a well-labeled copy of your output.

4) (p. 172) problem 34. Make sure you include well-labeled sketches of the distributions, with the probability of interest shaded. You may do this through a screen capture from the normal probability calculator applet (see the Prnt Scrn or such on your keyboard). If you use Minitab, include a copy of the Minitab output and your own sketch.

4) (p. 242) problem 52, make sure you justify your steps. Hint: You might want to consider calculating the probability in terms of the average lifetime for the package instead. If you use Minitab, include a copy of your output and draw a well-labeled accompanying sketch. If you use the normal probability calculator applet, include a screen capture of your output.

5) (p. 298) problem 20 using formula 7.11 (p. 295) and/or Minitab (including your output in the latter case)