Evaluate 200 ?nished products

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Reference no: EM131187844

Human inspection errors. Tests of product quality using human inspectors can lead to serious inspection error problems. To evaluate the performance of inspectors in a new company, a quality manager had a sample of 12 novice inspectors evaluate 200 ?nished products. The same 200 items were eval- uated by 12 experienced inspectors. The quality of each item- whether defective or nondefective- was known to the manager. The next table lists the number of inspection errors (classifying a defective item as nondefective or vice versa) made by each inspector. A SAS printout comparing the two types of inspectors is shown in the next column.

(a) Prior to conducting this experiment, the manager believed the variance in inspection errors was lower for experienced inspectors than for novice inspectors. Do the sample data support her belief? Test using α = .05.

(b) What is the appropriate p-value of the test you conducted in part a?

36	20	45	31	28	17	19	18
33	29	21	48	24	10	20	21

Reference no: EM131187844

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