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What is the specific purpose of hydrostatic tests for fire extinguishers (i.e., what specific hazards are the tests intended to guard against)?
Nationally, about 9% of tests turn up positive for COVID-19, according to the CDC. In a rando sample of 7 tests for COVI-19, what is the probability that exactly 1 are positive?
In inferential statistics, we calculate statistics of sample data to ______________.
A. estimate unknown population parameters and conduct tests about unknown population parameters
B. estimate unknown population parameters
C. None of the Answers
D. conduct tests about unknown population parameters