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4. (5 points) A study shows that 55% of the guests of a hotel do not use room service during their stay. Consider a random

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4. (5 points) A study shows that 55% of the guests of a hotel do not use room service during their stay. Consider a random sample of 20 hotel guests. (Show your work and explain the reasons.) a) [2] What is the probability that exactly 8 hotel guests do not use room service during their stay? b) [3] What is the probability that more than 7 hotel guests but fewer than 10 hotel guests do not use room service during their stay

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