Who's paying? Ari, Betty, Charlie, Daniela, and Ethel go to the bagel shop for lunch every Thursday. Each time, they randomly pick 2 of the group to pay for lunch by drawing names from a hat. (a) Give a probability model for this chance process. (b) Find the probability that Charlie or Daniela (or both) ends up paying for lunch

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A: Given information:

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A: Given information: μ=151000σ=35000 n=77

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