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5. Suppose the probability distribution for X = number of jobs held during the past year for work
study students at a university is as follows:
X 0 1 2 3 4 5
f(x) .12 a .28 .18 .06 .02

a. Find a.
b. Find the probability that a randomly selected student held three or more jobs during the past
year.
c. Find the cumulative distribution function.
d. Find the E(X).
e. How many jobs would you expect a randomly selected student to hold in the past year?

Respuesta :

Answer:

what is x equal to

Step-by-step explanation:

for example x= 3

and then you put

f(3)= slope + y - intercept

see how i changed f(x) to f(3) becuase the x was 3 and i put it there

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