used for randomly selected values X and Y from two populations
For comparing two small sets of observations,
gives insight into the meaning of the U statistic,
Answer:
a contaminant concentration
Explanation:
The concentration of the ingested contaminant determines the toxicity potential of the contaminant. All chemicals are acute toxicants if they are ingested in large amounts. The target organs and mechanism of action of these toxicants may vary but their potential to become toxic depends entirely on their absorption concentration. For example, Ethanol causes CNS depression but may lead to Liver cirrhosis if the concentration in body is very high.
It’s takes 4.5 to 5.5 years I believe
Answer:
- to protect the health of communities
- to conduct research to improve the treatment of diseases
- to prevent disease, illness, and injuries
- to detect outbreaks of disease and oversee a response to them