Stat 2000: Tips for Assignment 9
Published: Fri, 03/09/12
I have not finalized the date for the final exam seminar yet, but I am thinking it will be on Sunday, April 15, 2012 from 9:00 am to 9:00 pm. Please let me know what you think about this date. I don't want to offer it on Saturday, April 14 because I expect there will be exam conflicts and I will not be able to offer it any sooner than the 15th for the same reason.
Please click
this link for more information about the seminar and to sign up if you
are interested:
If you ever want to look back over a previous tip I have sent, do note that all my tips can be found in my archive. Click this link to go straight to my archive:
Did you miss my Tips on How to Do Well in this Course? Click here
Did you miss my Tips for Assignment 8? Click here
If you are taking the course by Distance/Online (Sections D01, D02, etc.), click here for my tips for your Assignment 9.
If you are taking the course by classroom lecture (Sections A01, A02, etc.), click here for my tips for your Assignment 9.
Tips for Assignment 9 (Sections A01, A02, etc.)
There is no Assignment 9 for the classroom lecture sections.
Study Lesson 6 in my study book to prepare for this assignment.
Those of you with an older edition will study Lessons 6 and 7 (and
really only study about the first two questions of Lesson 6, then move
on to Lesson 7: The Binomial and Poisson Distributions).
Note, in question 1,
for a situation to be binomial, you must be able to list the parameters
n and p (which is to say there must be a fixed number of trials, n, and the chance of "success" on each trial must be constant, p). In addition, X must be able to have values 0, 1, 2, ... n
where X is counting the number of "successes".
For a situation to be
Poisson, you must be able to list the parameter λ, the average number of "things", and
X must be able to have values 0, 1, 2, all the way to infinity, where X
is counting the number of "things" for which you have the
average rate.
Question 2 is standard binomial stuff. Take a look at my "seeds germinating" question for an example of how to use Table C if your p is not already on the table. Note, in part (e), when they ask for the probability that X is within one standard deviation of the mean, remember that X = 0, 1, 2, ... n. Which X value in that list is nearest the mean value that you computed in part (c)? Which other values in that list are within one standard deviation of that mean value? Find the probability X can take on those values.
Question 3 is more binomial stuff. You have to use the Normal Approximation method as taught in my lesson to solve part (e).
Questions 4 and 5 are pretty standard Poisson distribution questions as taught in my book.
Question 6 is
actually a Sign Test question (taught in Lesson 11 of my book). This is just a binomial question where, to get
the P-value, find the probability of the given X value or higher.