Answer Happy

a (c) Using the Poisson approximation Pk for the probability that a node has degree k, determine how many nodes of degree 18 or greater you would expect the network to have. You may use the fact that the probability that a node has degree k or greater is less than pk/(1 – (k)/k) if k > (k). (3 marks) a a (d) Give a brief explanation for the contrast between the answer to part (c) of this question and the answer to part (a) of Question 1 in relation to the qualitative difference between the degree distribution of a random network and that of a scale-free network. (4 marks)