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The Environmental Protection Agency, EPA in 2016, issued guidelines stating that Perfluorooctanoic acid (PFOA) in drinking water should be less than 700 part per trillion (ppt). Forty nine samples from the same area were collected and the average of the PFOA was 592 ppt, with a standard deviation of 350 ppt. At 1% significance level, can you conclude that the water from that area is safe to drink as per the EPA standard? State the hypothesis, calculate the statistical test (Round to three decimal places), find the p-value (Round to three decimal places) then write your conclusion in the context of the problem.

The Environmental Protection Agency, EPA in 2016, issued guidelines stating that Perfluorooctanoic acid (PFOA) in drinking water should be less than 700 part per trillion (ppt). Forty nine samples from the same area were collected and the average of the PFOA was 592 ppt, with a standard deviation of 350 ppt. At 1% significance level, can you conclude that the water from that area is safe to drink as per the EPA standard? State the hypothesis, calculate the statistical test (Round to three decimal places), find the p-value (Round to three decimal places) then write your conclusion in the context of the problem.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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The Environmental Protection Agency, EPA in 2016, issued guidelines stating that Perfluorooctanoic acid (PFOA) in drinking water should be less than 700 part per trillion (ppt). Forty nine samples from the same area were collected and the average of the PFOA was 592 ppt, with a standard deviation of 350 ppt. At 1% significance level, can you conclude that the water from that area is safe to drink as per the EPA standard? State the hypothesis, calculate the statistical test (Round to three decimal places), find the p-value (Round to three decimal places) then write your conclusion in the context of the problem.
Transcribed Image Text:The Environmental Protection Agency, EPA in 2016, issued guidelines stating that Perfluorooctanoic acid (PFOA) in drinking water should be less than 700 part per trillion (ppt). Forty nine samples from the same area were collected and the average of the PFOA was 592 ppt, with a standard deviation of 350 ppt. At 1% significance level, can you conclude that the water from that area is safe to drink as per the EPA standard? State the hypothesis, calculate the statistical test (Round to three decimal places), find the p-value (Round to three decimal places) then write your conclusion in the context of the problem.
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