3. (a) (b) Environmental Science & Technology (1993) reported on a study of contaminated soil in The Netherlands. Seventy-two 400-grams soil specimens were sampled, dried, and analyzed for the contaminant cyanide. The cyanide concentration (in mg/kg) of each soil specimen was determined using an infrared microscopic method. The sample resulted in a mean cyanide level of 84 mg/kg. Assume o = 80 mg/kg. Test the hypothesis that the true mean cyanide level in soil in The Netherlands does not exceed 100 mg/kg. Use a significance level of 0.01. State the null and alternative hypotheses H₁₂ : Calculate the value of the test statistic. Show workings. H₂₁: Value of test statistic = (c) Find the critical value(s) and draw the acceptance and rejection region.
3. (a) (b) Environmental Science & Technology (1993) reported on a study of contaminated soil in The Netherlands. Seventy-two 400-grams soil specimens were sampled, dried, and analyzed for the contaminant cyanide. The cyanide concentration (in mg/kg) of each soil specimen was determined using an infrared microscopic method. The sample resulted in a mean cyanide level of 84 mg/kg. Assume o = 80 mg/kg. Test the hypothesis that the true mean cyanide level in soil in The Netherlands does not exceed 100 mg/kg. Use a significance level of 0.01. State the null and alternative hypotheses H₁₂ : Calculate the value of the test statistic. Show workings. H₂₁: Value of test statistic = (c) Find the critical value(s) and draw the acceptance and rejection region.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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