Question

Four buses carrying 148 high school students arrive to Montreal. The buses carry, respectively, 33, 46, 27, and 42 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 4 bus drivers is also randomly selected. Let $Y$ denote the number of students on his bus. Compute the expectations of $X$ and $Y$: $E(X)=$ $E(Y)=$

Name: four buses carrying 148 high school students arrive to montreal the buses carry respectively 33 46 27 and 42 students one of the students is randomly selected let x denote the number of stud 55947
Uploaded: 2023-06-20T17:31:05-08:00
Duration: 5 min 13 s
Channel: Madhur L
Description: four buses carrying 148 high school students arrive to montreal the buses carry respectively 33 46 27 and 42 students one of the students is randomly selected let x denote the number of stud 55947

          Four buses carrying 148 high school students arrive to Montreal. The buses carry, respectively, 33, 46, 27, and 42 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 4 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 148 high school students arrive to montreal the buses carry respectively 33 46 27 and 42 students one of the students is randomly selected let x denote the number of stud 55947

Added by Zachary F.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Madhur L

06/20/2023

Step 1

Given: $N_1 = 33$ $N_2 = 46$ $N_3 = 27$ $N_4 = 42$ The total number of students is $N = N_1 + N_2 + N_3 + N_4 = 33 + 46 + 27 + 42 = 148$. This matches the information given in the problem. Show more…

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Four buses carrying 148 high school students arrive to Montreal. The buses carry, respectively, 33, 46, 27, and 42 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 4 bus drivers is also randomly selected. Let $Y$ denote the number of students on his bus. Compute the expectations of $X$ and $Y$: $E(X)=$ $E(Y)=$