Mathematics, 17.03.2022 21:20 kingemzy

If Sam can purchase up to 3 ice cream cones and the probabilities that he/she purchases 0, 1, 2, or 3, are 0.20, 0.45, 0.35, and 0.05 respectively, is this a valid probability distribution?

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If Sam can purchase up to 3 ice cream cones and the probabilities that he/she purchases 0, 1, 2, or...