Statistics Solutions

[Steps Shown] A previous sample of fish in Lake Michigan indicated that the mean poly- chlorinated biphenyl (PCB) concentration per fish was 11.2 parts per

Question: A previous sample of fish in Lake Michigan indicated that the mean poly- chlorinated biphenyl (PCB) concentration per fish was 11.2 parts per million with a standard deviation of 2 parts per million. Suppose a new random sample of 10 fish has the following concentrations: 11.5, 12.0, 11.6, 11.8, 10.4, 108,122, 11.9, 12.4, 12.6

Assume that the standard deviation has remained equal to 2 parts per million, and test the hypothesis that ,the mean PCB concentration has also remained unchanged at 11.2 parts per million. Use the 5 percent level of significance.

Price: $2.99
Solution: The downloadable solution consists of 1 pages
Deliverable: Word Document


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