homework 6-006

homework 6-006 - Statistics Prof. Giuseppe Arbia th NYU -...

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Statistics NYU - Spring 2012 Prof. Giuseppe Arbia V31.0018 – 001- V31.0018 - 006 6 th homework Thursday March 1 st 2012 Answer each of the questions. Read the questions carefully and keep your answers brief and to the point. PLEASE WRITE NEATLY. Please leave your homework in the mailbox of your respective Teaching Assistant by Tuesday at 8:00am. Since the homework will be discussed during the Lab sessions, no late homework can be accepted. Good work ! Question 1 It is given the following probability function of a discrete random variable X P(X) 1 0.05 3 0.25 7 0.10 10 0.30 15 0.30 Calculate the expected value and the variance of the variable X. Question 2 An urn contains 6 token numbered from 1 to 6. We draw randomly simultaneously (that is all the pairs have the same probability of being drawn and we cannot have 2 token with the same number) 2 tokens. (a) Build the random variable associated to the sum of the values on the two tokens.
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This note was uploaded on 04/05/2012 for the course STATS V3100018.0 taught by Professor Giuseppearbia during the Spring '12 term at NYU.

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homework 6-006 - Statistics Prof. Giuseppe Arbia th NYU -...

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