Manufacturing: Defective Toys A mechanical press is used
Chapter , Problem 9(choose chapter or problem)
Manufacturing: Defective Toys A mechanical press is used to mold shapes for plastic toys. When the machine is adjusted and working well, it still produces about 6% defective toys. The toys are manufactured in lots of n 100. Let r be a random variable representing the number of defective toys in a lot. Then p r/n is the proportion of defective toys in a lot. (a) Explain why p can be approximated by a normal random variable. What are mp and sp?
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