One of the Most Important Aspects of Quality Improvement Is

question 30

True/False

One of the most important aspects of quality improvement is the idea of reducing the variability in a product or service. For instance, a major bank has worked to reduce the variability in the service time at the drive-through. The managers believe that the standard deviation in service time should not exceed 30 seconds. To test whether this goal is being achieved, a random sample of n = 25 cars is selected each week and the service time for each car is measured. Last week, the mean time was 345 seconds with a standard deviation equal to 38 seconds. Given this information, if the significance level is 0.10, the critical value from the chi-square table is about 34.3.

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Definitions:

Folic Acid

A B-vitamin essential for red blood cell formation and for healthy cell growth and function.

Vitamin B12

An essential nutrient that helps keep the body's nerve and blood cells healthy and helps make DNA, the genetic material in all cells; also known as cobalamin.

Synthesized

Created or assembled from simpler components, typically referring to the production of substances by chemical or biological processes.

Primitive Gases

Naturally occurring gases, such as hydrogen and helium, believed to have been present in the earliest stages of the earth’s atmosphere.