Question
In: Statistics and Probability
Because of the rising costs of industrial accidents, many chemical, mining, and manufacturing firms have instituted...
Because of the rising costs of industrial accidents, many chemical, mining, and manufacturing firms have instituted safety courses. Employees are encouraged to take these courses designed to heighten safety awareness among them. A company is trying to decide which one of two courses to institute. To help make a decision, eight employees take course 1, and another group of eight take course 2. Each employee takes a test, which is graded out of a possible 25 marks. The safety test results of these employees are shown below. Assume that the scores are normally distributed.
Course 1 Course 2
Sample Mean 12.3750 19.1250
Sample SD 2.7222 2.9970
SD=Standard Deviation
Do these data provide enough evidence at the 5% level of
significance to infer that the marks from course 1 are lower than
those of course 2?
Solutions
orchestra answered 1 year agoRelated Solutions
Because of the rising costs of industrial accidents, many chemical, mining, and manufacturing firms have instituted...
Because of the rising costs of industrial accidents, many
chemical, mining, and manufacturing firms have instituted safety
courses. Employees are encouraged to take these courses designed to
heighten safety awareness. A company is trying to decide which one
of two courses to institute. To help make a decision, eight
employees take Course 1 and another eight take Course 2. Each
employee takes a test that is graded out of a possible 25 points.
The safety test results are shown below....
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inflation in health care prices and employees paying for a larger
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