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An agricultural scientist collects 18 soil samples from random locations in a farmer's field. The mean amount of organic
Posted: Thu May 05, 2022 9:02 pm
by answerhappygod
- An Agricultural Scientist Collects 18 Soil Samples From Random Locations In A Farmer S Field The Mean Amount Of Organic 1 (74.07 KiB) Viewed 31 times
An agricultural scientist collects 18 soil samples from random locations in a farmer's field. The mean amount of organic phosphorus in theses samples is 42.1 ppm, and the variance is 185.6 ppm². You may assume that organic phosphorus in soil follows a normal distribution. (a) Is there sufficient evidence to conclude that the mean phosphorus content of the farmer's field is less than 45 ppm? Carefully set up and run a significance test at level a = .05. (b) Determine a level C = 95% confidence interval for the population variance. As always, make sure your process is clear.