QUESTION 3 Multiple Access protocols (a). Consider the figure below, which shows the arrival of 6 messages for transmission at different multiple access wireless nodes at times t = 0.3, 1.7, 1.8, 2.5, 4.2, 4.6. Each transmission requires exactly one time unit. t=0.0 3 4 5 t-1.0 6 23 ●● t=2.0 t=3.0 For the pure ALOHA protocol, indicate which packets are successfully transmitted. You can assume that if a packet experiences a collision, a node will not attempt a retransmission of that packet until sometime after t=5. [Note: You can find more examples of problems similar to this here.] 01 02 t=4.0 6 t=5.0

Question 1. A researcher wants to study the effect of a price change on the sales of various brands of a certain product. Assume the market is made up of four brands - W, X, Y and Z- and the price change (decrease) for brand W is introduced immediately after time t0. Assume every respondent buys exactly one unit of the product in each period. Data on number of respondents buying each brand in each period, based on a panel, are as follows: Y W 175 25 100 25 25 Y 25 50 50 25 Note: Confine your attention only to the data presented Assume the world starts at to and stops after ti and the strategies of brands X, Y, and Z are unchanged between to and ti. c) Which brand(s) other than W exhibited the highest loyalty rate? Show your calculations. d) Which of the brands X Y, Z should be most worried about W's promotion? Show your calculations. to

Home Search Progress Tools Appearance▾ Unit 1: Practice Set 3 (Question 18/20) Question 18 A turn signal on an old truck flashes every 5 seconds. A turn signal on a new car flashes every 3 seconds. If both turn signals are turned on at the same time, after how many seconds will they flash at the same time? a 5 seconds bO8 seconds CO 15 seconds d O They will never flash at the same time. e Leave blank for now. I'll submit my answer later. Home Previous Next APR 14 MacBook Pro Search or type URL 5 6 4 $ % R T Y ZOOM W DA DOCX D + 27 U 80 9 ㄑ 0 P Fi +

Please help Me with question 10