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[3 marks] A simple random sample is to be taken of the Australian electorate, of which there are currently 16,635,280 enrolled voters. Calculate a sample size for a 95% confidence interval of +/-1% (i.e. margin of error of 1%) for the following two separate situations: (a) The two party preferred vote can be assumed to be 50%. (b) Voting for the Greens is assumed to be 10%. Explain any assumptions you have made