There are 300 ponds in a development block consisting of 120 villages. The administration is planning to use these ponds for fish farming. A survey was undertaken to estimate the total pond area...

Extracted text: There are 300 ponds in a development block consisting of 120 villages. The administration is planning to use these ponds for fish farming. A survey was undertaken to estimate the total pond area available at present. A simple random sample of 8 villages was drawn. The area of each pond in the sample villages was accurately measured. The number of ponds in each sampled villages and the area of ponds are as follows: Village Number of ponds Area (in hectares) 3 2.56 0.43 1.62 2 2 1.31 2.94 4 1.05 2.66 0.87 1.02 4 2 2.31 1.75 4 0.22 0.85 1.93 0.74 1.36 0.99 7 0.34 1.41 8 2.07 1.61 0.73 (1) (2) State the type of sampling design used. Estimate the total pond area in the development block, and place a bound on the error of estimation. How many villages should be included in the sample for estimating population total with a margin of error of magnitude 60 hectares? (3) 3. 3.