A microbial ecologist is interested in whether the microbial community of a pond changes when it rains. She knows that rainfall will increase the number of bacteria, but she is interested in the pattern of diversity. She collects a water sample from a pond two days before a rainfall and two days after and plates her samples on agar (a method to measure bacteria) and counts the number of colonies she observes for each of three bacteria: E. Coli, Salmonella, and Giardia. In the pre-rain sample she observes 21, 57, and 32 colonies respectively. In the post-rain sample she observes 59, 83, and 88 colonies respectively.
-To determine whether there appears to be a statistically significant relationship between rainfall and bacterial diversity she would conduct a χ2 analysis. After performing this analysis, which of the ranges below best describes the P value she would obtain?
Definitions:
Total Income
The sum of all earnings or revenue generated by an individual or entity from various sources before any deductions.
U.S. Income Distribution
The way in which total income is shared among the population of the United States.
Crowding Model
A theory or model that explains how public sector involvement can displace or reduce private sector activity in certain markets.
Occupational Segregation
The division of labor in which different groups of workers, often based on gender, ethnicity, or race, are systematically allocated different kinds of jobs.
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