Premium P X Gradebook x MywcC MYWCC BIS Worksheet Submissions - 14 X |вь Нуро /pid-2597646-dt-content-rid-20286129_1/courses/14519_2201HY/Hypothesis%20Testing%20%28T-Test%29.pdf 2. The Environmental Protection Agency (EPA) has established an air quality standard for lead to be 1.5 µg/m³. Listed below are measured amounts of lead in the air at Building 5 of the World Trade Center site on different days immediately after the Sept 11 attack. Assume that the population is normally distributed. Use a 1% significance level to test the claim that the sample is from a population with a mean lead amount greater than the EPA standard of 1.5 ug/m³. Sample: 5.40, 1.10, 0.42, 0.73, 0.48, 1.10 a) Identify and/or compute the following using your calculator. Round the sample mean and the sample standard deviation to 3 decimal places: n = Но b) Symbolically identify: Ho: НА" Circle the correct test for this problem: Right-tailed test Left-tailed test Two-tailed test c) Find the test statistic: (1-x) т- d) Sketch and shade the curve. Find the p-value. P - value = How does your p-value compare to a in part (a)? Cirele the correcct conclusion REJECT THE NULL HY POTHESIS DO NOT REJECT IHIE NULL IIY POTHESIS um P X Gradebook | MYWCC BI Worksheet Submissions - 14 X 2597646-dt-content-rid-20286129_1/courses/14519 2201HY/Hypothesis%20Testing%20%28T-Test%29.pdf Circle the correct test for this problem: Right-tailed test Left-tailed test Two-tailed test c) Find the test statistic: (x-4) T 3= d) Sketch and shade the curve. Find the p-value. P- value How does your p-value compare to a in part (a)? Circle the correct conclusion: REJECT THE NULL IYPOTHESIS DO NOT REJECT TIHE NULL HYPOTHESIS c) State your final conclusion in regards to this particular problem.

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