In a diet analysis of three different species of juvenile fish, a researcher surveys the prey of
Question:
In a diet analysis of three different species of juvenile fish, a researcher surveys the prey of brook trout, coho salmon, and steel head trout found in a tributary of Lake Superior. The researcher assumes that each count in the survey corresponds to a unique fish. After categorizing the prey into small, medium, or large sizes, the researcher cross-classifies the data into a two‑way table.
Species | small prey | medium prey | large prey |
brook trout | 285285 | 12591259 | 120120 |
coho salmon | 864864 | 808808 | 8080 |
steel head trout | 635635 | 19831983 | 269269 |
Use the data in the table to compute the total count of fish.
total count =
Suppose that the researcher randomly selects one fish from the total in the survey. Find the probability, ????P, that the fish will be a steelhead trout eating a small size prey. Enter the probability, ????P, as a decimal rounded to three places.
Applied Statistics in Business and Economics
ISBN: 978-0073521480
4th edition
Authors: David Doane, Lori Seward