2014Fall_Final_key - Math 230 Sta 230 Fall 2014 Final Exam...

Math 230 / Sta 230 Fall 2014
Final Exam
December 12, 2014 Time allowed: 180 minutes
Print Name:
Instructions:
(a) This is a closed book exam. You may bring a two-sided A4 paper of your own notes.
(b) Use a calculator when necessary. No cellphones.
(c) Show your work on the exam in the space provided (you may use the back of pages
if necessary).
(d) Please draw a circle or box around your final answers.
(e) Keep in mind that there are 8 problems, worth 150 points in total.
(f) Numerical answers: four significant digits or fractions in lowest terms . Nonnu-
merical: Simplify!
(g) Normal distribution table and PDF table attached.
(h) Do not cheat.
Good luck!

1. (24pts) Each of the following X variables can be described by a known distribution.
Give the name of the distribution with its possible parameters and its expec-
tation . No explanations needed. 4pts each.
1