Four buses carrying 151 high school students arrive to Montreal. The buses carry, respectively, 31, 48, 29, and 43 students. One of the students is randomly selected. Let ?X denote the number of students that were on the bus carrying this randomly selected student. One of the 44 bus drivers is also randomly selected. Let ?Y denote the number of students on his bus. Compute the expectations of ?X and ?Y: ?(?)=E(X)= ?(?)=E(Y)=

Four buses carrying 151 high school students arrive to Montreal. The buses carry, respectively, 31, 48, 29, and 43 students. One of the students is randomly selected. Let ?X denote the number of students that were on the bus carrying this randomly selected student. One of the 44 bus drivers is also randomly selected. Let ?Y denote the number of students on his bus. Compute the expectations of ?X and ?Y: ?(?)=E(X)= ?(?)=E(Y)=

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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