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Seagulls by the seashore Do seagulls show a preference for where they land? To answer
Chapter 11, Problem 8(choose chapter or problem)
Seagulls by the seashore Do seagulls show a preference for where they land? To answer this question, biologists conducted a study in an enclosed outdoor space with a piece of shore whose area was made up of 56% sand, 29% mud, and 15% rocks. The biologists chose 200 seagulls at random. Each seagull was released into the outdoor space on its own and observed until it landed somewhere on the piece of shore. In all, 128 seagulls landed on the sand, 61 landed in the mud, and 11 landed on the rocks. Do these data provide convincing evidence that seagulls show a preference for where they land?
Questions & Answers
QUESTION:
Seagulls by the seashore Do seagulls show a preference for where they land? To answer this question, biologists conducted a study in an enclosed outdoor space with a piece of shore whose area was made up of 56% sand, 29% mud, and 15% rocks. The biologists chose 200 seagulls at random. Each seagull was released into the outdoor space on its own and observed until it landed somewhere on the piece of shore. In all, 128 seagulls landed on the sand, 61 landed in the mud, and 11 landed on the rocks. Do these data provide convincing evidence that seagulls show a preference for where they land?
ANSWER:Step 1 of 3
Given,
Proportion of sand,
Proportion of mud,
Proportion of rocks,
Sample size,
Number of observed sand = 128.
Number of observed mud = 61.
Number of observed rocks = 11.
Let’s determine whether the data provide convincing evidence that seagulls show a preference for where they land: