A fishing boat docks with a large number of fish in its hold. At random, 25 fish are selected for examination, which includes a determination of juvenile (J = 1) or adult (J = 0) status, and a measurement of weight (W), in kilograms. Note: the large above is a cue to ignore the FPC- that, plus the fact that the number of fish in the hold is not known. Some summary statistics of this sample are below.


Additionally, the total catch was weighed as a whole, and found to be 1250 Kg. Provide answers to the following to two decimal places.

(a) Give a ratio estimate of the number of juvenile fish caught.

(b) Give a standard error for your estimate.