A research team wants to determine the insights on bacterial diseases in fishes across India. The research team has diff

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A Research Team Wants To Determine The Insights On Bacterial Diseases In Fishes Across India The Research Team Has Diff 1 (69.92 KiB) Viewed 13 times

A research team wants to determine the insights on bacterial diseases in fishes across India. The research team has difficulty collecting data from all 21 million fishes; they decided to take a random sample of the population by using 4,000 fishes. The team looks at the different attributes of the million fishe samples and wonders if there are any differences in bacterial diseases for fishes with different breed which majorly involve hagfish, lampreys, cartilaginous fish and bony fish. [4+1+3=8] (a) Identify any 4 sampling techniques suitable for this case and illustrate with examples. (b) Determine the number of samples to be selected from each stratum using disproportionate stratification. (c) Suppose team later got the statistics that 1.44 million are hagfish, 2.88 million are lampreys, 2.52 million are cartilaginous fish, 3.36 million are ray-finned fish, and 1.8 million are lobe-finned fish. Ray-finned fish and Lobe-finned fishes are classified under bony fish. Calculate the proportion and number of elements to be selected of each fish category to study population using proportionate stratification.