Suppose you are looking for a house near Charleston in Mount Pleasant, SC, and you have narrowed your search to three subdivisions: Carolina Park, Dunes West, and Park West.

1. Download the Mount Pleasant Real Estate data set.
2. Import the data into Excel.
3. For the variable List Price, calculate the sample mean, the sample standard deviation, and the sample size for the three different subdivisions.Put the calculations in a table and round to the nearest dollar for the sample standard deviation and the mean.
4. Based on the data set and the information we have, which confidence interval should we use here, a z or a t interval? Why?
5. Find the critical value for a 95% confidence level for each subdivision for the variable List Price.

Do you think a List Price of $520,000 is a reasonable value for the Carolina Park subdivision?