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Next: Question 7 Up: Sample questions on probability Previous: Question 5

Question 6

You are trying to estimate the average houshold income in Forsyth County. You randomly sample 200 households, and come up with the following sample statistics: mean = $28000, standard deviation = $5000. Draw up the 95 per cent confidence interval for your estimate of the population mean income. Give a brief interpretation of your answer.

Here you may look at an answer to this question--but try it yourself first!