I need the entire answer plus also i need to identify the sampling technique used in this sampling methed

+ Automatic Zoom The table below shows the distribution of Trip made by a group of 100 bus drivers surveyed on a working day in Hong kong. Find (i),The mean number of trips made by the bus drivers. (ii) The standard deviation of the number of trips made. [2] (b) Find the median number of trips made by the bus drivers [1] (c) Find the inter quartile range [2] A bus driver is chosen at random from the group of 100 bus drivers. (d) Find the probability that this bus driver made 10 or more trips [2] A second bus driver is chosen at random from the group of 100 bus drivers (e) Given that the first bus driver chosen at random made 10 or more trips, nd the probability that both bus drivers made 12 trips. [3] The amount of time that the 100 bus drivers waited for their next client was normally distributed with a mean of l 1 minutes and standard deviation 4 minutes. (i) (i) Calculate the probability that a bus driver chosen at random waited at least 9 minutes for the next client (ii) Calculate the expected number of bus drivers that waited at least ll minutes for their next client [4] The 100 bus drivers were selected for the survey by ordering taxi identication