Desiree, the purchasing officer of a large manufacturing company, inspects ten items selected at random from a
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Question:
Desiree, the purchasing officer of a large manufacturing company, inspects ten items selected at random from a lot of 50 items that contains five defective items. Let be the number of defective items inspected.
- Find the expected number of defective items among the inspected items.
- Find the expected number of non defective items among the inspected items.
- Find the mean and variance of .
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