The reputations of many businesses can be severely damaged by shipments of
manufactured items that contain an unusually large percentage of defective items. A
manufacturer of flashbulbs of cameras may want to be reasonable certain that less than
5% of its bulbs are defective. Suppose 300 bulbs are randomly selected from a very large
shipment, each is tested, and 10 defective bulbs are found. Does this provide sufficient
evidence for the manufacturer to conclude that the fraction defective in the entire
shipment is less than 0.05? Use 1% level of significance.solved?
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