Mathematics, 18.05.2021 19:20, Maaarii
. For a customer, the number of books he buys in a bookstore can be treated as a random variable. The probability of not buying any book, buying one book and buying 2 books are 0.05,0.8 and 0.15 for each customer. Suggest there are 400 customers who come to this bookstore today and the number of books purchased by each customer are a sequence of iid random variables. (a) Find the probability that the bookstore could sell more than 450 books (the sum of all customers buying) today
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When a 757 passenger jet begins its descent to the ronald reagan national airport in washington, d. c., it is 3900 feet from the ground. its angle of descent is 6 degrees. how far must the plane fly to reach the run way? a. 37,106 ft b. 37,310.4 ft c. 23,456.6 ft d 2,492.7 ft
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. For a customer, the number of books he buys in a bookstore can be treated as a random variable. Th...
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