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BCO127 Applied Management Statistics

BCO127      Applied Management Statistics                              Task brief

 

Assignment: The assignment is worth 40% of your marks for this subject.

Deadline and submission: Your assignment must be submitted via Turnitin on Moodle before 23:59 on Sunday 10th May 2020.

Word count: Your work is individual and should be uploaded in Moodle using Turnitin. Avoid any “copy-paste” practice to prevent possible problems of plagiarism.

Title: Built on the acquired theoretical and practical knowledge of the second part of the semester you are required to solve the following problems:

You must provide an explanation of your results in all your answers.

 

  • (15%) For Applied Management Statistics class you want to know how college students feel

about the transportation system in Barcelona.

 

  1. What is the population in this study?
  2. What type of sample would you use and why?

 

 

  • (25%) A manager of an e-commerce company would like to determine average delivery time of the products. A sample of 25 customers is taken. The average delivery time in the sample was four days. Suppose the delivery times are normally distributed with a standard deviation of 1.2 days.

 

  1. Provide a 95 % confidence interval for the mean delivery time.
  2. The manager claims that the average delivery time of their products does not exceed 3 days. Write the null and alternative hypothesis regarding to the claim of the manager.
  3. Test the manager’s claim at 95 % confidence level.
  4. Write the conclusion of your result

 

  • (15%) For an effective parental skill study, a researcher asked: How many hours do your kids watch the television during a typical week in Barcelona? The mean of 100 Kids (ages 6-11) spend about 28 hours a week in front of the TV. Suppose the study follows a normal distribution with standard deviation 5.
  1. Estimate the mean of all kids (ages 6-11) in Barcelona, using 99% confidence interval. (show all the calculations)
  2. Write the conclusion of your result

 

  • (25%) A regression analysis has been conducted between the annual income (in 1000 euros) and the work experience (in years) of people with 0.05 significance level. The results are summarized below.
  1. Define the independent and dependent variables. What can you say about the correlation between them.

 

 

 

 

BCO127 Applied Management Statistics                              Task brief

 

  1. Interpret R Square.
  2. Write the regression model and interpret the coefficients.
  3. Estimate the average annual income of a person who has 15 years of work experience.

 

 

Summary
Table 1.
Regression Statistics
Multiple R 0,93
R Square 0,86
Adjusted R Square 0,82
Standard Error 2,11
Observations 6
Table 2.
  df SS MS F Significance F
Regression 1 107,603 107,603 24,276 0,008
Residual 4 17,730 4,432
Total 5 125,333      
 

Table 3.
  Coefficients Standard Error t stat p value Lower 95% Upper 95%
Intercept 17,351 3,160 5,491 0,005 8,577 26,124
Variable X 1 1,362 0,276 4,927 0,008 0,595 2,130

 

 

  • (20%) In order to analyze the performance of smart phones, the characteristics of 293 smart phone models have been recorded.  Assume that for the initial analysis we would like to work with a sample of 10 observations. Choose a sample consisting 10 different smart phones by simple random sampling considering the table of random numbers given in the Appendix. You can begin from any row or column. Write your explanations for each step of choice and give a list of the sampled smart phone models.

 

  1. Apple iPhone 7
  2. Apple iPhone 7  Plus
  3. Apple iPhone 6 Plus
  4. Apple iPhone 6S Plus
  5. Apple iPhone 6
  6. Apple iPhone 5
  7. Apple iPhone 5S
  8. Apple iPhone 8
  9. Apple iPhone 8 Plus
  10. Xiaomi Hong Mi Red Rice
  11. Xiaomi Mi 4
  12. Xiaomi Mi 4c
  13. Xiaomi Mi 4s
  14. Xiaomi Mi 5
  15. Xiaomi Mi 5s
  16. Xiaomi Mi 5s Plus
  17. Xiaomi Mi 5c
  18. Xiaomi Mi 5 Pro
  19. Xiaomi Mi 5X
  20. Xiaomi Mi 6
  21. Xiaomi Mi Max
  22. Xiaomi Mi Max 2
  23. Xiaomi Mi Mix
  24. Xiaomi Mi Mix 2
  25. Xiaomi Mi Note
  26. Xiaomi Mi Note 2
  27. Xiaomi Mi Note 3
  28. Xiaomi Mi Note Pro
  29. Xiaomi Mi3
  30. Xiaomi Redmi2
  31. Xiaomi Redmi3
  32. Xiaomi Redmi 3S
  33. Xiaomi Redmi4
  34. Xiaomi Redmi4A
  35. Xiaomi Redmi4X
  36. Xiaomi Redmi Note
  37. Xiaomi Redmi Note 2
  38. Xiaomi Redmi Note 3
  39. Xiaomi Redmi Note 4
  40. Xiaomi Redmi Note 3 Pro
  41. Xiaomi Redmi Note 4X
  42. Xiaomi Redmi Note 5A
  43. Samsung Galaxy S8 Plus
  44. Samsung Galaxy S8
  45. Samsung Galaxy S7
  46. Samsung Galaxy S7 edge
  47. Samsung Galaxy C8
  48. Samsung Galaxy C5 Pro
  49. Samsung Galaxy C7 Pro
  50. Samsung Galaxy C9 Pro
  51. Samsung Galaxy C7 SM-C7000
  52. Samsung Galaxy C5
  53. Samsung Galaxy C7213
  54. Samsung Galaxy Core Prime
  55. Samsung Galaxy Core 2
  56. Samsung Galaxy Core Plus G3500
  57. Samsung Galaxy Core Advance
  58. Samsung Galaxy J7 Core
  59. Samsung Galaxy J7 Pro
  60. Samsung Galaxy J5 Pro
  61. Samsung Galaxy J7 Max
  62. Samsung Galaxy Xcover 4
  63. Samsung Galaxy A7
  64. Samsung Galaxy A5
  65. Samsung Galaxy A3
  66. Samsung Galaxy A8
  67. Samsung Galaxy J3
  68. Samsung Galaxy Grand Prime Plus
  69. Samsung Galaxy J7 Prime
  70. Samsung Galaxy J5 Prime
  71. Samsung Galaxy J2
  72. Samsung Galaxy J1 Ace Neo
  73. Samsung Galaxy J1 Ace
  74. Samsung Galaxy J1
  75. Samsung Galaxy J3 Pro
  76. Samsung Galaxy J7
  77. Samsung Galaxy J5
  78. Samsung Galaxy Note 2
  79. Samsung Galaxy Note 3
  80. Samsung Galaxy Note 4
  81. Samsung Galaxy Note 5
  82. Samsung Galaxy V Plus
  83. Samsung Galaxy Note Edge
  84. Samsung Galaxy Note FE
  85. Windows Phone Lumia 540
  86. Windows Phone Lumia 535
  87. Windows Phone Lumia 1320
  88. Windows Phone Lumia 625
  89. Windows Phone Lumia 1020
  90. Windows Phone Lumia 925
  91. Windows Phone Lumia 928
  92. Windows Phone Lumia 720
  93. Windows Phone Lumia 520
  94. Windows Phone Lumia 950
  95. Windows Phone Lumia 510
  96. Windows Phone Lumia 505
  97. Windows Phone Lumia 620
  98. Windows Phone Lumia 822
  99. Windows Phone Lumia 920
  100. Windows Phone Lumia 820
  101. Windows Phone Lumia 900
  102. Windows Phone Lumia 650
  103. Windows Phone Lumia 550
  104. Windows Phone Lumia 950 XL
  105. Windows Phone Lumia 640 XL
  106. Windows Phone Lumia 640
  107. Windows Phone Lumia 930
  108. Windows Phone Lumia 630
  109. Windows Phone Lumia 1520
  110. Windows Phone Lumia 505
  111. Windows Phone 7 Pro
  112. LG V30
  113. LG V20
  114. LG V10
  115. LG G5
  116. LG G4
  117. LG G4 Beat
  118. LG G4 Stylus
  119. LG G4c
  120. LG G3
  121. LG Q6
  122. LG G2
  123. LG Nexus 5X
  124. LG Nexus 4
  125. LG Stylus 3
  126. LG Optimus G Pro
  127. LG X Power
  128. LG K10
  129. LG Q8
  130. LG K8
  131. LG K4
  132. LG K3
  133. LG G Vista 2
  134. LG K7
  135. LG X Cam
  136. LG Leon
  137. LG Spirit
  138. LG Magna
  139. LG Joy
  140. LG Bello
  141. LG Optimus F7
  142. LG G6
  143. LG Q6 Plus
  144. LG Q6 Alpha
  145. LG X Style
  146. LG K5
  147. LG Stylus 2 Plus
  148. LG Stylus 2
  149. LG X Screen
  150. LG L Bello 2
  151. LG Class
  152. LG G Flex 2
  153. LG L60
  154. LG G3 S
  155. LG G3 Beat
  156. LG L80
  157. LG L65
  158. LG L90
  159. LG L70
  160. LG F70
  161. LG G Flex
  162. LG G Pro 2
  163. LG G Pro Lite
  164. LG G2 Mini
  165. LG Google Nexus 5
  166. LG K5
  167. LG L40
  168. LG Optimus L7 2
  169. LG Optimus L9 P760
  170. LG E973 Optimus G
  171. LG Optimus 4X HD
  172. LG P700 Optimus L7
  173. LG Optimus L5
  174. LG Optimus L3
  175. LG Optimus Net
  176. LG P930 Nitro HD
  177. LG Optimus EX SU880
  178. LG Optimus Note LU6500
  179. LG Optimus TrueHD LTE P936
  180. LG P990 Optimus 2X
  181. LG Tegra 2
  182. LG Optimus 3D
  183. LG E720
  184. LG A130
  185. LG Optimus Z
  186. LG Optimus Q
  187. HTC U Ultra
  188. HTC U11 Plus
  189. HTC U11
  190. HTC U Play
  191. HTC Desire 650
  192. HTC 10 evo
  193. HTC Desire 10 Pro
  194. HTC Desire 10 Lifestyle
  195. HTC One A9s
  196. HTC One S9
  197. HTC Desire 830
  198. HTC 10
  199. HTC Desire 828
  200. HTC One E9
  201. HTC Desire 825
  202. HTC Desire 630
  203. HTC Desire 530
  204. HTC Desire 728G
  205. HTC One X9
  206. HTC Desire 526G
  207. HTC Desire 526
  208. HTC One A9
  209. HTC One M8s
  210. HTC One E9 Plus
  211. HTC Desire 520
  212. HTC One M9 Plus
  213. HTC One M9
  214. HTC Desire 626
  215. HTC Desire 826
  216. HTC Desire 320
  217. HTC Desire 620
  218. HTC Desire 620G
  219. HTC Desire Eye
  220. HTC Desire 616
  221. HTC Desire 516
  222. HTC Desire 820
  223. HTC Desire 510
  224. HTC One E8
  225. HTC One mini 2
  226. HTC Desire 310
  227. HTC Desire 816
  228. HTC Desire 610
  229. HTC Desire 400
  230. HTC Desire 700
  231. HTC Desire 501
  232. HTC One Max
  233. HTC Desire 100
  234. HTC Desire 300
  235. HTC Desire 500
  236. HTC One Mini
  237. HTC Butterfly S
  238. HTC Desire 600
  239. HTC First
  240. HTC One
  241. HTC Desire U
  242. HTC Butterfly
  243. HTC Droid DNA
  244. HTC Desire SV
  245. HTC One SV
  246. HTC One X Plus
  247. HTC J
  248. HTC Desire VC
  249. HTC Desire V
  250. HTC Desire C
  251. HTC One V
  252. HTC One XL
  253. HTC One S
  254. HTC One X
  255. HTC Primo
  256. HTC Velocity 4G
  257. HTC Titan 2
  258. HTC Hero S
  259. HTC Edge
  260. HTC Rezound
  261. HTC Vivid
  262. HTC Evo Design 4G
  263. HTC Sensation XL
  264. HTC Explorer
  265. HTC 8XT
  266. HTC Accord
  267. HTC 8S
  268. HTC 8X
  269. Sony Xperia L1
  270. Sony Xperia XA1 Plus
  271. Sony Xperia XZ1
  272. Sony Xperia XZ1 Compact
  273. Sony Xperia XZ Premium
  274. Sony Xperia XZs
  275. Sony Xperia XA1 Ultra
  276. Sony Xperia XA1
  277. Sony Xperia X Compact
  278. Sony Xperia XZ
  279. Sony Xperia E5
  280. Sony Xperia XA
  281. Sony Xperia X Performance
  282. Sony Xperia X
  283. Sony Xperia Z5 Compact
  284. Sony Xperia Z5
  285. Sony Xperia Z5 Premium
  286. Sony Xperia M5
  287. Sony Xperia C5 Ultra
  288. Sony Xperia Z3 Plus
  289. Sony Xperia C4 Dual
  290. Sony Xperia Z4
  291. Sony Xperia X4g
  292. Sony Xperia M4 Aqua
  293. Sony Xperia

 

 

APPENDIX: Table of Random Numbers

 

Source: Berenson, M.L., Levine, D.M. and Krehbiel, T.C. (2012). Basic Business Statistics: Concepts and Applications, 12th Edition, Pearson.

 

Rubrics

Questions worth 25 points

 

  Descriptor
   
22.5 –   25 The student uses the proper formulas, completes the calculations correctly, arrives to the right result, draws the graph correctly when required
20 –   22.3 The student uses the right formula, but applies it wrongly (minor errors, figures in the wrong place…) and then, of course, the result is wrong
17.5 –   19.8 The student demonstrates a fair understanding of the meaning of the data given and of the question asked, but he/she is not able to identify the formula to be used, does larger errors and/or the calculations are wrong.
10 –   17.3 The student demonstrates some understanding of the concepts but he/she is not able to relate the data given in any way
2.5 –   9.75 The student demonstrates insufficient understanding of the concepts and does not mention any relevant ideas or concepts, but he/she done not leave it blank
 0     The student leaves the question blank or cheats.

 

Questions worth 20 points

 

  Descriptor
18-20 The student uses the proper formulas, completes the calculations correctly, arrives to the right result, draws the graph correctly when required
16-17.9 The student uses the right formula, but applies it wrongly (minor errors, figures in the wrong place…) and then, of course, the result is wrong
14-15.9 The student demonstrates a fair understanding of the meaning of the data given and of the question asked, but he/she is not able to identify the formula to be used, does larger errors and/or the calculations are wrong.
8-13.9 The student demonstrates some understanding of the concepts but he/she is not able to relate the data given in any way
1-7.9 The student demonstrates insufficient understanding of the concepts and does not mention any relevant ideas or concepts, but he/she done not leave it blank
0 The student leaves the question blank or cheats.

 

 

Questions worth 15 points

Descriptor
13.5 – 15 The student demonstrates an excellent understanding of the concepts.
12 – 13.4 The student demonstrates a good understanding of the concepts.
10.5 – 11.9 The student demonstrates a fair understanding of the concepts.
9 – 10.4 The student demonstrates some, but insufficient understanding of the concepts.
4.5 – 8.85 The student demonstrates insufficient understanding of the concepts. They may mention some relevant ideas or concepts, although it is clear that the relationship between them is not understood by the student.
1.5 – 4.35 The student demonstrates insufficient understanding of the concepts and does not mention any relevant ideas or concepts.
0     The student leaves the question blank or cheats.

 

 

 

 

 

 

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