Hypothesis test
Environmental Protection Agency standards require that the amount of lead in drinking water be less than 15 ppb. Twelve samples of water from a particular source have the following concentrations, in ppb.
11.4 13.9 11.2 14.5 15.2 8.1 12.4 8.6 10.5 17.1 9.8 15.9
A hypothesis test will be performed to determine whether the water from this source meets the EPA standard.
a. State the appropriate null and alternate 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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can u clearly show me how to find a sample size (N) , A2, and
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please explain how to find p-value
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