Question

7- To estimate the mean of a population, what do you do if you do not know the distribution of the population? (you should explain what theorem you use and how this theorem is helpful).

Answer 1

1. The first step is to take maximum possible random sample (more than 30) from the given population.

2.Find sample mean of each random sample.

3.Find the mean of all sample means.That value will be the estimate value for the population, by using theorem "Sample Mean is an unbiased estimator of Population Mean." This theorem is helpful to find out the estimate value of population mean.

4. As you increase the sample size you will get the most accurate and close value to population mean.