Question: Problem 3 Problem 3a. Construct a 90% confidence interval for the population mean relating to Variable 3 based on the twenty values you created

Problem 3 Problem 3a. Construct a 90% confidence interval for the population mean relating to Variable 3 based on the twenty values you created for this variable in Problem 1 above. You need to show all formulae needed to answer this question and make sure that you use your calculator and that you show all your work. Keep the final answer to 4 decimals. [6 marks]

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