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2. The average zone of inhibition (in mm) for mouthwash Has tested by medical technology students has been known to be 9mm. A random sample of 10 mouthwash H was tested and the test yielded an average zone of inhibition of 7.5 mm with a variance of 25mm. Is there enough reason to believe that the antibacterial property of the mouthwash has decreased? Test the hypothesis that the average zone of inhibition of the mouthwash is no less than 9mm using 0.05 level of significance. A. State the hypotheses. B. Determine the test statistic to use. C. Determine the level of significance, critical value, and the decision rule.

2. The average zone of inhibition (in mm) for mouthwash Has tested by medical technology students has been known to be 9mm. A random sample of 10 mouthwash H was tested and the test yielded an average zone of inhibition of 7.5 mm with a variance of 25mm. Is there enough reason to believe that the antibacterial property of the mouthwash has decreased? Test the hypothesis that the average zone of inhibition of the mouthwash is no less than 9mm using 0.05 level of significance. A. State the hypotheses. B. Determine the test statistic to use. C. Determine the level of significance, critical value, and the decision rule.

Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter1: Functions
Section1.2: The Least Square Line
Problem 8E
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2. The average zone of inhibition (in mm) for mouthwash H as tested by medical technology students has been known to be 9mm. A random sample of 10 mouthwash H was tested and the test yielded an average zone of inhibition of 7.5 mm with a variance of 25mm. Is there enough reason to believe that the antibacterial property of the mouthwash has decreased? Test the hypothesis that the average zone of inhibition of the mouthwash is no less than 9mm using 0.05 level of significance. A. State the hypotheses. B. Determine the test statistic to use. C. Determine the level of significance, critical value, and the decision rule. D. Compute the value of the test statistic. E. Make a decision. F. Draw a conclusion.
Transcribed Image Text:2. The average zone of inhibition (in mm) for mouthwash H as tested by medical technology students has been known to be 9mm. A random sample of 10 mouthwash H was tested and the test yielded an average zone of inhibition of 7.5 mm with a variance of 25mm. Is there enough reason to believe that the antibacterial property of the mouthwash has decreased? Test the hypothesis that the average zone of inhibition of the mouthwash is no less than 9mm using 0.05 level of significance. A. State the hypotheses. B. Determine the test statistic to use. C. Determine the level of significance, critical value, and the decision rule. D. Compute the value of the test statistic. E. Make a decision. F. Draw a conclusion.
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