A county health department wants to know whether significant ground water contam

Question

A county health department wants to know whether significant ground water contamination has occurred due to the use of a specific pesticide on farms in 5 different communities within the county. To do this, they obtain samples from 20 wells in each of these communities and determine the percentage of wells in each community that have significant pollution with this pesticide. To determine whether the communities differ in the frequency of polluted wells, what statistical test should be used?

Explanation / Answer

Since there are 5 gorups and we want to check on frequencies, then we wan to test a goodness of fit.

That is tested using

OPTION D: Chi-square test [ANSWER]

**********************************

[This test is also called chi-square goodness-of-fit test.]

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.