Final_Sp 07_A_May 2

# Final_Sp 07_A_May 2 - MATH 333A Probability Statistics...

This preview shows pages 1–3. Sign up to view the full content.

Final Examination (Spring 2007) Score May 9, 2007 NJIT Instructors : S. Dhar, A. Jain, J. Porus Must show all steps for each problem to receive full credit. I pledge my honor that I have abided by the Honor System. ___________________ (Signature) 1. The number of messages sent per hour over a computer network has the following probability distribution: X = number of messages 10 11 12 13 14 15 f(x) = Probability 0.07 0.16 0.29 0.21 0.20 0.07 a. Find the mean and standard deviation of X. (5 pts) b. Plot the c.d.f. (cumulative distribution function) of X. (5 pts) #1 # 2 #3 #4 #5 #6 #7 #8 Total 1 Name: SSN: Section #

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Math 333A: May 9, 2007 2 . In an experiment on rats, a new cancer drug is tested in three doses such that 40% of the rats are given a high dose, 35% a low dose, and 25% receive none at all. Of the rats who receive the high dose, 70% are cured, while 50% of those receiving the low dose are cured and only 10% of those not receiving the drug are cured. (5 pts each) a. What is the probability that a randomly chosen rat from the experiment received the
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 03/05/2008 for the course MATH 333 taught by Professor Prof.jain during the Spring '08 term at NJIT.

### Page1 / 8

Final_Sp 07_A_May 2 - MATH 333A Probability Statistics...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online