The mean and standard deviation of Carbon concentration is 5 mg/L and 2 mg/L based on...
The mean and standard deviation of Carbon concentration is 5 mg/L and 2 mg/L based on 25 samples from a river. The mean and standard deviation of Nitrogen concentration is 7 mg/L and 3 mg/L based on 35 samples from the same river. The experimenter wants to answer the question if the Nitrogen concentration is higher than the Carbon concentration. Which of the following methods do you use?
(a) Z-test, Default Procedure
(b) Z-test, Pooled Variance Procedure
(c) T-test, Pooled Variance Procedure
(d) T-test, Default Procedure
Homework Answers
We do not know the population standard deviation but the sample standard deviations are not significantly different. Hence,
The correct method to use is:
T-test, Pooled Variance Procedure
Option C is correct.
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The mean and standard deviation of Carbon concentration is 5
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The state standard for Chemical X in the American River is 20 mg/L. You measure six...
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please show all steps 6.2.28-T The following data represent the concentration of dissolved organic carbon (mg/L)...
please show all steps
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The following data represent the concentration of dissolved organic carbon (mg/L) collected from 20 samples of...
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Assume there is a sample of n = 5, with the sample mean X, = 35...
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