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July 28, 2014

Homework Help: statistics

Posted by bill on Tuesday, April 19, 2011 at 11:11pm.

The highest acceptable level of pesticide found in quail has been limited to 0.35 parts per million (ppm). A hunting organization measured the level of the pesticide found in a random sample of 20 quail harvested from field trials. The sample produced a sample mean of .44. Assume that the population standard deviation is 0.21 ppm. Using alpha [] = 0.05, does the data provide sufficient evidence to conclude that the mean level of pesticide is greater that the limit of 0.35 ppm?

2a. Use the critical value z0 method to test the hypothesis.
(References: example 7 through 10 pages 385 - 388, end of section exercises 39 44 pages 392 - 393) (6 points)

H0: u≤0.35
Ha: u>0.35
Critical z0:
Decision:
Interpretation:

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