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Environmental health indicators include air quality

by | Nov 30, 2023 | Posted Questions

Statistics: Hypothesis Testing

Environmental health indicators
include air quality, water quality, and food quality. Twenty-five years ago,
47% of U.S. food samples contained pesticide residues. In a recent study, 44 of
125 food samples contained pesticide residues.

a. State the hypotheses that can
be used to show that the population proportion declined.

b. What is the sample proportion?

c. What is the p-value?

d. Use a = .01. What is your
conclusion?

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