What is the expected value of the random variable? (Туре an integer or a decimal.)
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A: It is known that Number of cards in a deck = 52 Number of kings = 4 Sample size = 4
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A: Here use normal distribution
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A: Probability distribution table X 0 1 2 3 4 5 P(x) 0.660 0.287 0.048 0.004 0.001 0.000 Here…
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Q: if 4 cards are selected from a standard deck of 52 cards without replacement, find probability at…
A: Probability of an event is the random chance of occurrence of an event.
Q: a. an ace or a king; b. a king or a diamond
A: Here Given Total No of cards=52
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- Flexible Work Hours In a recent survey, people were asked whether they would prefer to work flexible hours----even when it meant slower career advancement----so they could spend more time with their families. The figure shows the results of the survey. What is the probability that three people chosen at random would prefer flexible work hours?Quality Control To control the quality of their product, the Bright-Light Company inspects three light bulbs out of each batch of ten bulbs manufactured. If a defective bulb is found, the batch is discarded. Suppose a batch contains two defective bulbs. What is the probability that the batch will be discarded?Telephone Marketing A mortgage company advertises its rates by making unsolicited telephone calls to random number. About 2% of the calls reach consumers who are interested in the company’s services. A telephone consultant can make 100 calls per evening shift. What is the probability that two or more calls will reach an interested party in one shift? How many calls does a consultant need to make to ensure at least a 0.5 probability of reaching one or more interested parties? [Hint: Use trial and error.]