Stat 2225 Sections 1&2
Summer 2013
Assignment #2 (due June 6) (Total 51 marks)
(Note: Whenever the question is a hypothesis test question, you MUST include the
appropriate alternative hypothesis Ha)
1. [6 marks]
The Ministry of Transportation provides the
Stat 2225
Summer 2013
Assignment #2 (Answer Key) (Total 51 marks)
1.
[6]
(a) The distance driven by the residents of that big city, and the distance driven by the residents of that small city.
[1]
(b) No, it is not necessary (but as a good practice you sh
Stat 2225
Summer 2013
Assignment #4 (Answer Key) (Total 31 marks)
1.
[15]
(a) Because there are two (explanatory) variables (of course the price isnt one of them, it is the response
variable), we cant use a completely randomized design which deals with on
Stat 2225
Summer 2013
Assignment #4 (due July 04) (Total 31 or 49 marks)
(Note: Whenever a problem involves analysis of variance, an ANOVA table MUST be included as well as
stating the alternative hypotheses!)
1. [15 marks]
Many US citizens have turned to
Stat2225
Summer 2013
Assignment #5
(Due July 30, 2013)
Use SGC wherever appropriate, make sure include the SGC output and graphs.
1. [18 marks]
The following data report the occupancy rates (%) and average room rates ($) for the largest
U.S. hotel markets
Stat 2225
Summer 2013
Assignment #3 (Answer Key)
1.
[7]
(a) The pairwise difference of cost between kitchen and master bedroom.
[1]
(b) Wilcoxon Signed rank test!
[1]
(c) We use Kitchen Master bedroom as the difference. Hence MD is the median of the diffe
Stat 2225
Summer 2013
Assignment #1 (Answer Key) [Total 40 marks]
1.
[7marks]
(a) The actual (or population) average debt of students graduating from public colleges and universities.
[1]
(b)
(c)
Quite obvious that the sample size is 245; (therefore by Ce
Stat 2225
Summer 2013
Assignment #3 (due June 25) (Total 65 marks)
(Note: Youre allowed to use SGC to do all the calculations if you wish. If you do in this way, you MUST
include the SGC result. For any ANOVA question, including an ANOVA table is a MUST!)
Stat 2225 All Sections
Term Test #2 (Answer Key)
1. (a) No, it is used for pairwise comparison of the difference between two population
proportions. Not for simultaneously testing, and not and testing on population means.
(b) No, is impossible, because th