Calculate expectations and variances of x and y

Reference no: EM13108941

Four buses carrying 156 high school students arrives in Montreal. Buses carry, respectively, 30, 49, 33, and 44 students. One of the students is arbitarily selected. Let X denote number of students which were on bus carrying this arbitarily chosen student. One of 4 bus drivers is also arbitarily chosen. Let Y denote number of students on his bus. Calculate expectations and variances of X and Y:

E(X)=
Var(X)=
E(Y)=
Var(Y)=

Reference no: EM13108941

Questions Cloud

What are the genotypes and phenotypes for two blue : In andelusian chickens, the color of the feathers is cocominant. The extremes are black and white with mixed alleles creating blue. If the chickens are dominant for a long spur and recessive for a short spur, what are the genotypes and phenotypes ..

What was the initial temperature of the cu metal : What was the initial temperature of the Cu metal If the final temperature of the Cu-H 2 O mixture was at twenty five degree celsius? (The specific heat of copper = 0.377 J/(g°C).)

What is the difference between the energy stored in food : What is the difference between the energy stored in food and the energy in ATP?

Plans are being made to produce a product : For case IV, both resources supply separate but dependent markets" that is the number of units of output for both x and y is equal. Plans are being made to produce a product that requires 40 minutes on resource x and 30 minutes on resource y

Calculate expectations and variances of x and y : One of 4 bus drivers is also arbitarily chosen. Let Y denote number of students on his bus. Calculate expectations and variances of X and Y.

What is the heat change of water : What is the heat change of H 2 O If the final temperature of the mixture = 25 degree celsius?

Steps used to perform a hypothesis test : Please state the steps used to perform a hypothesis test on the coefficient of correlation and provide a detailed example. Details are greatly appreciated!

Why do most multicellular organisms require transport system : Why do most multicellular organisms require transport systems.

Determine how to minimize cost of completing the survey : For a telephone survey, a marketing research group needs to contact at least 150 wives, 120 husbands, 100 single adult males, and 110 single adult females.

User Account

All Pages