Calculate expectations and variances of number of students

Reference no: EM13108977

Our buses carrying 151 high school students arrives in Montreal. Buses carry, respectively, 38, 41, 32, and 40 students. One of the students is arbitarily selected. Let X denote number of students which were on bus carrying this arbitarily selected student. One of the 4 bus drivers is also arbitarily selected. Calculate expectations and variances of X.

Reference no: EM13108977

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