Posted by **ally** on Sunday, December 6, 2009 at 12:35am.

a company manufactures calculators in batches of 45 and claims that the rate of defects is 4%.find the probability of getting exactly 2 defects in a batch of of 45 if the rate of defects is 4%.if the store receives a batch of 45 calculators and finds that there are 2 defective calculators,do they have any reason to doubt the company's claimed rate of defects.

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