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10. [OM Points] DETAILS PREVIOUS ANSWERS WANEFMAC7 9.2.026. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER 19905 Internet Stock Boom According to an article, 11.7% of Internet stocks that entered the market in 1999 ended up trading below their initial offering prices. If you were an investor who purchased five Internet stocks at their initial offering prices, what was the probability that at least three of them would end up trading at or above their initial offering price? (Round your answer to four decimal places.) ex 2 3) = x Need Help? 11. [1" Points] DETAILS PREVIOUS ANSWERS WANEFMAC7 9.2.028. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER In a large on-the-job training program, half of the participants are female and half are male. In a random sample of five participants, what is the probability that an investigator will draw at least two males?+ (Round your answer to four decimal places.) we a 2) = Need Help? 12. [011 Points] WANEFMAC7 9.2.030.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Your manufacturing plant produces air bagsr and it is known that 30% of them are defective. Five air bags are tested. Compute the probability distribution of the binomial variable described above, and use it to compute the probability that if ve air bags are tested, at least one will be defective and at least one will not. -" 555 555555 5555555555 5.5555 MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Use the counting techniques from the last chapter. A bag contains three red marbles, three green ones, one fluorescent pink one, three yellow ones, and two orange ones. Suzan grabs four at random. Find the probability of the indicated event. She gets at least two red ones, given that she gets at least one green one. x 1 5. [0.6711 Points] DETAILS PREVIOUS ANSWERS WANEFMAC7 9.2.040. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER It is known that 65% of all the ZeroCal hamburger patties produced by your factory actually contain more than 1,000 calories. Compute the probability distribution f0r n = 50 Bernoulli trials. (a) What is the most likely value for the number of burgers in a sample of 50 that contain more than 1,000 calories? (Round your answer to the nearest whole number.) - (b) Complete the following sentence: There is an approximately 88% chance that a batch of 50 ZeroCal patties contains x or more patties with more than 1,000 calories. 0:) Compare the graphs of the distributions for n = 50 trials and n = 20 trials. What do you notice? The graph for n = 50 trials is more widely 0 distributed than the graph for n = 20