Find probability that at least one of four security systems

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Reference no: EM13911689

1. A high-security government installation has installed four security systems to detect attempted break-ins. The four security systems operate independently of each other, and each has a .85 probability of detecting an attempted break-in. Assume an attempted break-in occurs. Use the binomial distribution to find the probability that at least one of the four security systems will detect it.

2. A new stain removal product claims to completely remove the stains on 90 percent of all stained garments. Assume that the product will be tested on 20 randomly selected stained garments, and let x denote the number of these garments from which the stains will be completely removed. Use the binomial distribution to find P(x 13) if the stain removal product's claim is correct. If x actually turns out to be 13, what do you think of the claim?

Reference no: EM13911689

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