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Author Question: We can describe graphically the shape of the distribution by a histogram, which can be symmetrical ... (Read 127 times)

nummyann

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on: Jun 24, 2018
We can describe graphically the shape of the distribution by a histogram, which can be symmetrical or asymmetrical.
 
  Indicate whether the statement is true or false

Question 2

If X and Y are random variables with Var(X) = 7.5, Var(Y) = 6 and Cov(X, Y) = 4, then Var(2X + 3Y) is:
 
  A) 33
  B) 37
  C) 88
  D) 132


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nothere

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Reply #1 on: Jun 24, 2018
Answer to Question 1

TRUE

Answer to Question 2

D


nummyann

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Reply 2 on: Jun 24, 2018
Wow, this really help

irishcancer18

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Reply 3 on: Yesterday
Gracias!

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