Four buses carrying 151 high school students arrive to Montreal. The buses carry, respectively,33 , 44, 32, and 42 students. One of the studetns is randomly selected. Let X denote the number of students that were on the bus carrying this randomly selected student. One of the 4 bus drivers is also randomly selected. Let Y denote the number of students on his bus. Compute the expectations and variances of X and Y : E(X) = Var (X)= E(Y)= Var(Y)=
Four buses carrying 151 high school students arrive to Montreal. The buses carry, respectively,33 , 44, 32, and 42 students. One of the studetns is randomly selected. Let X denote the number of students that were on the bus carrying this randomly selected student. One of the 4 bus drivers is also randomly selected. Let Y denote the number of students on his bus. Compute the expectations and variances of X and Y : E(X) = Var (X)= E(Y)= Var(Y)=
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 14PPS
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Four buses carrying 151 high school students arrive to Montreal. The buses carry, respectively,33 , 44, 32, and 42 students. One of the studetns is randomly selected. Let X denote the number of students that were on the bus carrying this randomly selected student. One of the 4 bus drivers is also randomly selected. Let Y denote the number of students on his bus. Compute the expectations and variances of X and Y :
E(X) =
Var (X)=
E(Y)=
Var(Y)=
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