Fixed and Random effect?

3. [6 points] An ecologist is interested in the possible negative effects of marinas and boat mooring areas on the abundances of fish. Having read Hurlbert's paper about pseudoreplication, he decides to examine this by randomly choosing 4 marinas, 4 boat mooring areas, and 4 undisturbed locations for comparison, while also ensuring these three different types of locations were spatially interspersed. At each of these 12 locations, he then counted the number of fish over a set period of time underwater at each of five random sites. (a) Determine the experimental design associated with the dataset he obtained, how many total replicates?. More specifically, identify the factors in this experimental design, whether they are fixed or random and the relationships between the factors (nested or crossed) (b) Write down the model, being sure to define your notation and to articulate any model