The optimal clustered design for a fixed sample size is to catch a total of 36 unit(s), across 4 pool(s) with 9 unit(s) each pool.
A couple of suggestions:
Drop the (s) at the end of words. For a cluster design, it will always suggest at least 2 pools, and therefore at least 2 total units, so you can safely always have an 's'. The number of units per pool can be 1, so I suggest making the text automatically use 'unit' or 'units' depending on number.
Change order of information to this template:
For the given inputs, the optimal design is to sample 36 units per collection site, across 4 pools with 9 unit in each pool.
Currently output has the current format:
A couple of suggestions:
Change order of information to this template: