Light bulbssold by a company are tested for defects independently. The probability that a defective light bulb is discovered in 0.01. The bulbs are sold in packages of 10 bulbs. The company offers a money-back guarantee that at most 1 of the 10 lightbulbs in a package will be defective. A customer purchases 3 packages of lightbulbs. What is the probability that exactly 1 of these packages will be returned?

Answer rating: 100% (QA)

Let X denotes the number of defective bulbs in a package A pa... View the full answer