Question

A study of pollutants showed that certain industrial emissions should not exceed 2.5 parts per million. You believe a particular company may be exceeding this average. To test this supposition, you randomly take a sample of nine air tests. The sample average is 3.4 parts per million, with a sample standard deviation of 0.6. Does this result provide enough evidence for you to conclude that the company is exceeding the safe limit? Use α = .01. Assume emissions are normally distributed.



$1.99
Sales1
Views61
Comments0
  • CreatedFebruary 19, 2015
  • Files Included
Post your question
5000