A random sample of 10 economists produced the following forecasts for percentage growth in real domestic

(5) A random sample of 10 economists produced the following forecasts for percentage growth in real 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

 (e) The variance of the sample proportion of economists predicting growth

of at least 2.5% in real gross domestic product