Considering the following scenario, which method would be most appropriate when calculating the margin of error for the population mean?

A research scholar wants to estimate the mean number of school children (in thousands) who read above their grade level in a major city in Florida. He obtains information from26school children in the city and finds the mean to be7.4. The population is assumed to be normally distributed.

Choose one of the following:

Normalz-distribution

Student'st-distribution

More advanced statistical techniques