A school class of 120 students is driven to a symphonic concert on one of three buses. There are 34 students on one bus, 42 on another, and 44 on the third bus. When the buses arrives, one of the 120 students is randomly chosen. Let X denote the number of students on the bus of the randomly chosen student, and nd E[X]. Required:
a. What is the state space of X?
b. What is the probability mass function associated with X?
c. What is the expected value of X: E[X]?

chicken chicken chicken

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correct choice is b

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when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,

k

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domit

51840000 cm 2

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