Confidence Intervals – Dr. Richards is researching the effectiveness of several new, organic types of fertilizer that are also good for the environment. In her sampling, she finds that the mean improvement in crop yields from three different fertilizers are all 23%. However, the 95% confidence intervals of the three fertilizers differ as follows: Fertilizer Mean Crop Yield Improvement 95% Confidence Interval for Yield Improvement 1 23% 22% - 24% 2 23% 20% - 26% 3 23% 18% - 28% Explain what this it means to have the same sample means but different confidence intervals. What are the implications for Dr. Richards research?
Confidence Intervals – Dr. Richards is researching the effectiveness of several new, organic types of fertilizer that are also good for the environment. In her sampling, she finds that the mean improvement in crop yields from three different fertilizers are all 23%. However, the 95% confidence intervals of the three fertilizers differ as follows: Fertilizer Mean Crop Yield Improvement 95% Confidence Interval for Yield Improvement 1 23% 22% - 24% 2 23% 20% - 26% 3 23% 18% - 28% Explain what this it means to have the same sample means but different confidence intervals. What are the implications for Dr. Richards research?
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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- Confidence Intervals – Dr. Richards is researching the effectiveness of several new, organic types of fertilizer that are also good for the environment. In her sampling, she finds that the
mean improvement in crop yields from three different fertilizers are all 23%. However, the 95% confidence intervals of the three fertilizers differ as follows:
Fertilizer |
Mean Crop Yield Improvement |
95% Confidence Interval for Yield Improvement |
1 |
23% |
22% - 24% |
2 |
23% |
20% - 26% |
3 |
23% |
18% - 28% |
Explain what this it means to have the same sample means but different confidence intervals. What are the implications for Dr. Richards research?
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