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Unformatted text preview: Culver, Madonna Hermit Crab Analysis (2) 1. NULL Hypothesis: There is no relationship between hermit crabs density and snail density. Alternative Hypothesis 1 There is a positive relationship between hermit crab density and snail density. Alternative Hypothesis 2 There is a negative relationship between hermit crab density and snail density. 2. NULL Hypothesis : There is no relationship between sizes of snail shells and crab shells Alternative Hypothesis: There is a negative relationship between the sizes of hermit crab and snail shells Alternative Hypothesis: There is a positiverelationship between the sizes of hermit crab and snail shells 3. NULL Hypothesis: The hermit crabs are occupying shells in proportion to what is available. Alternative Hypothesis : Hermit crabs are being shell selective. Analysis Criteria In this experiment, we looked and study the population of hermit crab and snails and the possible correlation of their distribution, and the occurrence of resource limitation. There were two field study sites where the samples for the experiment were obtained, and both along rocky intertidal zone. The sampling population of hermit crabs and snails were obtained within a m ^2 sampling quadrants, along a transects tape. In some cases we used subsample of the quadrant, in a...
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- Spring '10