Determine the probability that you would observe this situation or more extreme for the delegates that arrive by air assuming that the true probability of arriving by air is 0. 4?.

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?