In the Netherlands, healthy males between ages of 65 and 79 have distribution of serum uric acid levels that is well-approximated by normal distribution with mean=341micromoles/L and standard deviation=79.
Assume that, for an upcoming study, we want to find out 100 men with serum uric acid level between 300 and 300micromoles/L. If we randomly interview men between the ages of 65 and 79, how many interviews must we schedule so that we can expect to obtain 100 men with desired uric acid level?