Nov 2012 Charts for Week 4 Lecture covering the Week 4 iLab

1. B. Heard
(These may not be copied, reproduced, or posted
in an online classroom without my permission.
Students may download one copy for personal use.)

2.  Week 4 iLab
 9 Questions (some requiring multiple answers)
 I will show similar problems, but please note
these are not the same values!
 Submit in the given Microsoft Word Document to
the Week 4 iLab Dropbox found in the Dropbox
area (tabs at top of your course)

3.  Number 1
 I will be using 1/5, 2/5 and 4/5 (NOT ¼ , ½ and ¾ )

6.  Now Graph All Three

10.  Number 2
 Download Data (if you haven’t already)
 File >> Open Worksheet
 Change Drive to pshop$(ilabss)(G:)
 Select Math 221 Folder
 Select Math221_LabData Minitab
 When pop-up shows click “OK” (maybe twice)

14.  Number 3

15.  Number 3
ETC

16.  Number 4

17.  Forthe first one, x ≥ 1, you would add all of the
probabilities from 1 through 10 for 2/5 or calculate
1 – P(0)

18.  Forthe second one, x > 1, you would add all of
the probabilities from 2 through 10 for 2/5 or
calculate 1 – (P(0)+P(1))

19.  Forthe third one, 4<x ≤ 7, you would add all of
the probabilities from 5 through 7

20.  For the last one, x < 4 OR x ≥ 7, you would add all of
the probabilities from 0 through 3 AND all
probabilities from 7 through 10 (OR YOU COULD SAY
1 – THOSE NOT INCLUDED)

21.  Number 5
Mean = 10 (2/5) = 4 Std Dev = Sq Root (10)(2/5)(3/5) = 1.549

22.  Number 6
Mean = 10 (1/5) = 2 Std Dev = Sq Root (10)(1/5)(4/5) = 1.265

23.  Number 7
Mean = 10 (4/5) = 8 Std Dev = Sq Root (10)(4/5)(1/5) = 1.265

24.  Number 8
USE DEFINITION OF BINOMIAL DISTRIBUTION…..

25.  Number 9
USE YOUR RESULTS FROM THE SURVEY DATA IN NUMBER 2 AND
COMPARE THEM TO THE RESULTS FOR ½ IN NUMBER 5. EXPLAIN
WHY THEY DIFFER (HINT: ONE IS _________ AND THE OTHER IS
______________) ABOUT A PARAGRAPH