Question 3 (12 marks) Estimate the percentage of three bedroom houses for sale in Lismore with a price less than $450,000 by (a) Calculating the proportion of three bedroom houses for sale in the sample with a price less than $450,000 (b) Using the sample proportion calculated in Part (a) to construct and interpret a 90% confidence interval for the proportion of three bedroom houses for sale in Lismore with a price less than $450,000. Use an appropriate confidence interval formula, including showing your calculations. Clearly state any assumption/s required or why no assumptions are required. (c) Jo and Robin are looking for a three bedroom house to purchase in Lismore for less than $450,000. Is their choice of three bedroom houses for sale limited? Justify using the conclusion to Part (b). Solution Question 3