iv. If 80 persons are introduced to the product, determine the number of persons who are expected to buy the product. b) It is known that an average of 5 trains pass through Grand Central Terminal every 30 minutes. Find the probability that Exactly 4 trains will pass in 30 minutes ii. i. less than 2 trains will pass in an hour

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Counting Principles

In statistics, the counting principle can be said to be the concept in which the quantity of an item is determined. There can be a single item, or a group of items, or items that are related to each other. In every possible set of items, the quantity of the possible item groups or their sorting measures can be determined with counting principles.