From a Community of 80 Homes,the EPA Took a Random

question 52

Essay

From a community of 80 homes,the EPA took a random sample and found the presence of lead in the tap water.In the 10 homes sampled,the average lead content was 12 parts per billion with s = 5 pts/billion.Construct a 99% confidence interval estimate for the population mean.
____________________ to ____________________
Do you feel that the homes exceed the EPA recommended maximum of 15 pts/billion?
Explain your answer.

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Definitions:

Blue-Collar Workers

Employees working in manual labor fields or industries that typically require physical work, such as manufacturing or construction.

White-Collar Workers

Employees who perform professional, managerial, or administrative work, typically in an office setting, contrasting with blue-collar workers who perform manual labor.

Scribner

A reference to Sylvia Scribner, a prominent American psychologist known for her work in cognitive anthropology and learning in socio-cultural contexts.

Collectivist Cultures

Societies that prioritize group goals over individual achievements and emphasize interdependence.