Q6 The following table shows the probability distribution of the number of mobile phones per family in Hong Kong. These figures were collected by a local telecommunications company. Number of mobile phones per family 30 Probability 0.084 0.224 0.46- 0.12+ 0.10 0.024 (a) Calculate the expected number of mobile phones per family. (2 marks)~ (b) The counting of mobile phones from a large batch of families contains 5% errors. If 10 families are randomly selected from the batch, find the probability that (i) no errors were found (2 marks)