Measurements of the breath of a cranium are measured by 10 observers. The average of these measurements is 115 cm with an SD of 3cm. Estimate the likely size of the chance error in the ave.

Carlos Rodriguez <carlos@math.albany.edu>
This problem was contributed by a student in Elementary Statistics. It is offered as it is with no warranty of any kind
Last modified: Wed May 13 12:29:11 EDT 1998