It is known from past records that 1 in 20 balloons produced by a factory is defective.

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It is known from past records that 1 in 20 balloons produced by a factory is defective. (a) Twenty balloons were chosen at random, find the probability that at most three balloons are defective. (b) To monitor the production, a random sample of 140 balloons was taken and the number of defective balloons was recorded. Use an appropriate approximation to find the probability that more than six balloons are defective

Posted Date: Jun 15, 2024 12:58 AM

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It is known from past records that 1 in 20 balloons produced by a factory is defective.

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