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Author Question: If E(X1) = 5, then E(3X1-7) = ________. a.5. b.15. c.2. d.8. ... (Read 18 times)

karen

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If E(X1) = 5, then E(3X1-7) = ________.
  a.5.
  b.15.
  c.2.
  d.8.

Question 2

Find the mean and variance for the continuous random variable X where
  .

  a.E(X) = 4/3 and var(X) = 2/9
  b.E(X)= 4 var(X) = 56/9
  c.E(X)= 4/3 var(X) = 56/9
  d.E(X)= 4 var(X) = 2/9



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hugthug12

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Answer to Question 1

correct: d

Answer to Question 2

correct: a




karen

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Reply 2 on: Aug 1, 2018
Wow, this really help


cam1229

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

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