An economist wants to estimate the mean number of school children (in thousands)

Question

An economist wants to estimate the mean number of school children (in thousands) who read above their grade level in a major city in Georgia. He obtains information from 16 school children in the city and finds the mean to be 9.4. The population distribution is assumed to be uniformly distributed. Determine which of the following methods would be most appropriate when calculating the margin of error for the population mean:

1.notmal z-distribution 2. Student t-distribution 3.more advanced statistical techniques

Explanation / Answer

The population distribution is assumed to be uniformly distributed. Since the population distribution is not normal, we cannot use normal z distribution or student t distribution. Economist must use “more advanced statistical techniques” when calculating the margin of error for the population mean.

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