Question

Question # 2 A digital transmission carries a randomly mixed set of video packets. The occurrence statistics of packets are designated in 10 groups. The video-transmission involves streaming of packets wherein the statistics of occurrence of bit rates is considered as of variable bit rate (VBR) type. The number of occurrences of each group and the corresponding random value of the associated random bit rates (RVs) in the packets are as follows: Events enumerated Bit rate (R) in Mbps: RV packets |Number of 6.4 5.9 0.6 6.2 5.7 6.1 6.3 5.7 5.6 0.2 Voice 80 | 60 | 50 | 40 | 50 | 60 I 75 | 40 | 30 20 occurrences Determine the following of the RV (Bit rate -Ri) (a) Find the upper and lower bounds of the average performance of the RV (b) State with reason the most appropriate mean value (AM, HM or GM) that describes the average performance of the bit rate (c) Find the expected mean, median, mode, variance and standard deviatiorn (d) Plot the cumulative probability distribution (CDF) of the RV Answer-hints: Median:5.8; sigma=1.943]

Answer 1