A random sample of 10 economists produced the following forecasts for percentage growth in real gross domestic product in the next year:
2.2 2.8 3.0 2.5 2.4 2.6 2.5 2.4 2.7 2.6
Use unbiased estimation procedures to find point estimates for the following:
a. The population mean
b. The population variance
c. The variance of the sample mean
d. The population proportion of economists predicting growth of at least 2.5% in real gross domestic product