Bluegill sunfish, a species of freshwater fish, prefer to feed in the open water in summer, but, in the presence of predators, they tend to hide in the weeds near shore. A study compared the growth rate of bluegills that fed in the open water with the growth rate of bluegills that fed only in near-shore vegetation. "Open-water" and "near-shore" fish were both measured in eight lakes, and the mean growth rate of open-water fish was compared to the mean growth rate of near-shore fish using a two-sample t-test. What was done wrong in this study?
Answer
It is given that the data is collected for the samples, first at the open water location and second time at the near shore location for bluegill fish.
Test mentioned in the paragraph is only two sample t -test, but it is not mentioned whether it is a dependent samples t test or independent samples t test.
So, it must be clearly stated in the above study that the test is a dependent samples t test because same set of bluegill fish is used twice.
therefore, we have a dependent samples t test in the study.
Bluegill sunfish, a species of freshwater fish, prefer to feed in the open water in summer,...
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