Draw a sketch of the sampling distribution

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Reference no: EM131402797

Workers exposed to dioxin. The Occupational Safety and Health Administration (OSHA) conducted a study to evaluate the level of exposure of workers to the dioxin TCDD. The distribution of TCDD levels in parts per trillion (ppt) of production workers at a Newark, New Jersey, chemical plant had a mean of 293 ppt and a standard deviation of 847 ppt (Chemosphere, Vol. 20, 1990). A graph of the distribution is shown here. In a random sample of n = 50 workers selected at the New Jersey plant, let y‾ represent the sample mean TCDD level.

2437_Graph 0.jpg

(a) Find the mean and standard deviation of the sampling distribution of y‾.

(b) Draw a sketch of the sampling distribution of y‾. Locate the mean on the graph.

Reference no: EM131402797

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