The yield of a chemical process is being studied. From previous experience, yield is known to be normally distributed with σ = 3. The past five days of plant operation have resulted in the following percent yields: 91.6, 88.75, 90.8, 89.95, and 91.3. How large a sample is needed so that you would be 95% sure that the true mean is only off by less than 0.25 of the sample mean.
Rate of Change
The relation between two quantities which displays how much greater one quantity is than another is called ratio.
Slope
The change in the vertical distances is known as the rise and the change in the horizontal distances is known as the run. So, the rise divided by run is nothing but a slope value. It is calculated with simple algebraic equations as:
The yield of a chemical process is being studied. From previous experience, yield is known to be
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