A random sample of eight homes in a particular suburb had the following selling prices (in thousands of dollars). 92 83 112 127 109 96 102 90 a.

A random sample of eight homes in a particular suburb had the following selling prices (in thousands of dollars).

92 83 112 127 109 96 102 90 

a. Find a minimum variance unbiased point estimate of the population mean?

b. Use an unbiased estimator to estimate the proportion of homes in this suburb selling for less than $92,500?