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Author Question: Are X and Y independent? Explain. What will be an ideal ... (Read 24 times)

B

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on: Jun 24, 2018
Are X and Y independent? Explain.
 
  What will be an ideal response?

Question 2

Suppose we select a capital punishment supporter so that we can ask some follow up questions. What is the probability that the person we select is female?
 
  What will be an ideal response?


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itsakadoozi

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

Clearly X and Y are independent since P(x,y) = P(x).P(y) for all pairs (x,y).

Answer to Question 2

S = Capital punishment supporter
F = Female
P(S  F) = P(S  F)  P(F) = (0.46 )(0.48 ) = 0.2208
P(F  S) = P(F  S) / P(S) = 0.2208 / 0.64 = 0.345


B

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Reply 2 on: Jun 24, 2018
Gracias!

upturnedfurball

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Reply 3 on: Yesterday
Wow, this really help

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