The probability density function for the number of red marbles ...

[rmenurse]

  The probability density function for the number of red marbles in a randomly selected sample of colored marbles is given below. What is the probability that there are 3 or fewer marbles in the sample chosen?
 
 

  a.0
  b.0.55
  c.1.00
  d.0.05

Question 2

  What does P(X = k) equal to for a discrete random variable?
 

  a.P(X = k) = sum of the probabilities of all simple events for which X = k
  b.P(X = k) = k
  c.P(X = k) = product of the probabilities of all simple events for which X = k
  d.P(X = k) =

[Natalie4ever]

Answer to Question 1

correct: c

Answer to Question 2

correct: a

[rmenurse]

Thank you

[Natalie4ever]

No problemo