8. (6) Researchers believe that human male infertility has increased significantly in recent years due to...

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8. (6) Researchers believe that human male infertilityhas increased significantly in recent years due to exposure to BPAand related chemicals. A recent study provided evidence for this byinterviewing lab technicians at a sperm donor bank in Chicago,which purchases sperm mainly from college students from a smalllocal college. They report that the number of donors withacceptable sperm counts (at least 15 million sperm per milliliterof semen) has declined by almost 60% since 1980. Relate thefollowing questions to this information:
Define sample vs. population and explain what each would be inthis study.
Sample is one selection from a population. Sample would be
Define Random Variation and explain how it could be a factor inmaking conclusions about sperm quality and quantity?
Define confounding factor, and list one potential Confoundingfactor in using this sample to represent the population.
Provide an argument for why this sample might not containindependent data points.
Define sampling error and discuss whether it might be occurringin this study.

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a Population consists of all the elements in a set of data Sample consists of a few units of the data Sample is a representative of the population It must be unbiased The population is all the college stuents in Chicago Here as a samplle some students of a local college in Chicago is being chosen b Random variation The propensity to deviate arbitrarily from the true magnitude of the parameter for the approximate magnitude of a parameter eg See Answer

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