ECSE-2500 Engineering Probability, RPI, Spring 2011 Home Page
Homework 6, due 2pm Tues Mar 29, 2011
Notes
- Email your solutions, as a PDF file, to
wrfranklin+homeworkATgmail.com , replacing AT with @.
- You may do this homework in teams of two people.
- Put the homework number, your names and RCS-IDs on the homework. (E.g. I would say something like Homework 3, W. Randolph Franklin, frankwr.)
- Please put HW06 in your subject line.
- This homework will be graded by Harish.
- Many of these questions will require Matlab (or some other similar package).
Questions
- (4 pts) Let X be a normal random variable with mean=10 and stdev=3
What is the probability that
- X<=5?
- 5<X<=10?
- 10<X<=15?
- 15<X?
- (4 pts) Let X be a Poisson random variable with mean=10.
What is the probability that
- X<=5?
- 5<X<=10?
- 10<X<=15?
- 15<X?
- (4 pts) Let X be an exponential random variable with mean=10.
What is the probability that
- X<=5?
- 5<X<=10?
- 10<X<=15?
- 15<X?
- (10) Do exercise 4.73 on page 222 of the text.
- (10) This exercise shows how the sum of independent r.v. start looking like a normal distribution.
- Compute the pdf of the sum of 2,3,4, and 5 independent r.v. that are each U[0,1].
- Compute the mean and standard deviation of each pdf.
- For each sum, plot the pdf and overlay it with a plot of the pdf of the normal distribution with the same mean and standard deviation.