I have a Statistics project, but I need help. I have to write my own problem, Sigma unknown.......?

Question

I have to write my own problem to estimate the mean of a population (sigma unknown, and confidence level 0.05). Using "Estimating a Population Mean: sigma not known"
Any ideas?

Answer 1

I'd assume that you need a convenient source of data. The business section and sports sections of newspapers might have the kind of data that you need.

How big will your sample be?

I looked at the kind of answers that you provide. You could do a search and tabulate the price of a Playstation 3 from different sources. That would give you some real world data to work with.

Or, find data for something that you're interested in and it's easy to get data.