Environmental Protection Agency standards require that the amount of lead in drinking water be less than (15
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Environmental Protection Agency standards require that the amount of lead in drinking water be less than \(15 \mathrm{ppb}\). Twelve samples of water from a particular source have the following concentrations, in ppb.
A hypothesis test will be performed to determine whether the water from this source meets the EPA standard.
a. State the appropriate null and alternative hypotheses.
b. Compute the \(P\)-value.
c. Can you conclude that the water from this source meets the EPA standard? Explain.
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Saud Ur Rehman
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