Mister
Student Name Student Number Course Study Mode
Full Time/Part Time
School of Computer Science & Software Engineering
Test 4
STAT131 – Understanding Variation and Uncertainty JANUARY 2011 ‐‐ MARCH 2011 _____________________________________________________________________ UOW Moderator Lecturer Weightage Duration : : : : Dr Anne Porter Yeo Sze Wee, Aaron 10% of Subject 1 week
_____________________________________________________________________
INSTRUCTIONS TO CANDIDATES 1. Write your student name, student number (if available) and course CLEARLY in the boxes provided above. 2. This is a take home test. 3. There is ONE question in this paper. 4. The total marks for this Test is 10 marks. 5. All answers must be written in this question booklet. Please write neatly and show your workings if required.
Question 1 Two Italian pizza restaurants (Domino and Pizza House) are located across the street from a neighborhood estate. Domino advertises that they can deliver to any house in the neighborhood estate faster than Pizza House. Pizza House is not happy with the advertisement and has filed a complaint to the Consumer Association of Singapore (CAS) that what Domino claim is invalid. CAS decides to engage a company to conduct a test to verify the claim. The company then selects two household (A and B) to order 10 pizzas at different timing of the day from each restaurants to test out the claim. The results (in minutes) are shown below: Domino 16.80 11.70 15.60 16.70 17.50 18.10 14.10 21.80 13.90 20.80 1. At 0.05 level of significant, is there any evidence that the mean delivery time for Domino is less than Pizza house? Assume Household A and Household B order the 10 pizzas at different timing of the day. (5 marks) 2. If Household A ordered a pizza from Domino, Household B also ordered a pizza from Pizza House
Full Time/Part Time
School of Computer Science & Software Engineering
Test 4
STAT131 – Understanding Variation and Uncertainty JANUARY 2011 ‐‐ MARCH 2011 _____________________________________________________________________ UOW Moderator Lecturer Weightage Duration : : : : Dr Anne Porter Yeo Sze Wee, Aaron 10% of Subject 1 week
_____________________________________________________________________
INSTRUCTIONS TO CANDIDATES 1. Write your student name, student number (if available) and course CLEARLY in the boxes provided above. 2. This is a take home test. 3. There is ONE question in this paper. 4. The total marks for this Test is 10 marks. 5. All answers must be written in this question booklet. Please write neatly and show your workings if required.
Question 1 Two Italian pizza restaurants (Domino and Pizza House) are located across the street from a neighborhood estate. Domino advertises that they can deliver to any house in the neighborhood estate faster than Pizza House. Pizza House is not happy with the advertisement and has filed a complaint to the Consumer Association of Singapore (CAS) that what Domino claim is invalid. CAS decides to engage a company to conduct a test to verify the claim. The company then selects two household (A and B) to order 10 pizzas at different timing of the day from each restaurants to test out the claim. The results (in minutes) are shown below: Domino 16.80 11.70 15.60 16.70 17.50 18.10 14.10 21.80 13.90 20.80 1. At 0.05 level of significant, is there any evidence that the mean delivery time for Domino is less than Pizza house? Assume Household A and Household B order the 10 pizzas at different timing of the day. (5 marks) 2. If Household A ordered a pizza from Domino, Household B also ordered a pizza from Pizza House