Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
Home  >>  CBSE XII  >>  Math  >>  Probability
0 votes

Two cards are drawn successively without replacement from a well shuffled deck of cards.Find the mean and standard variation of the random variable X where X is the number of aces.

Can you answer this question?

1 Answer

0 votes
  • \(A\;pack\;of\;52\;cards\;contain\;4\;aces\)
  • \(In\;a;toss\;of\;dies\;twice\)
  • \(X=\;no\;of\;aces\)
  • \(X=(0\;1\;2\;)\)
  • \(Mean\;=\sum\;P_i\;X_i\)
  • \(\sigma\;=\sqrt{variance}=\sqrt{\sum\;P_iX^2_i\;-\;(\sum\;P_iX_i)^2}\)


answered Mar 17, 2013 by poojasapani_1
edited Jun 4, 2013 by poojasapani_1

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, AIPMT Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App