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.
Correct Answer:
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7.1575; 16.8425; Yes; Because ...View Answer
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