STAT 200 OL4US2 Sections Final Exam Fall 2015

STAT 200 OL4US2 Sections Final Exam Fall 2015

STAT 200 OL4US2 Sections Final Exam Fall 2015
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STAT 200: Introduction to Statistics Final Examination, Fall 2015 OL4/US2 Page 1 of 6
STAT 200
OL4/US2 Sections
Final Exam
Fall 2015
The final exam will be posted at 12:01 am on December 11, and
it is due at 11:59 pm on December 13, 2015. Eastern Time is
our reference time.
This is an open-book exam. You may refer to your text and other course
materials as you work on the exam, and you may use a calculator. You must
complete the exam individually. Neither collaboration nor consultation with
others is allowed.
Show all of your work and reasoning. In particular, when there are
calculations involved, you must show how you come up with your answers
with critical work and/or necessary tables. Answers that come straight from
programs or software packages will not be accepted. If you need to use
software (for example, Excel) and /or online or hand-held calculators to aid in
your calculation, please cite the sources and explain how you get the results.
This exam has 200 total points.
You must include the Honor Pledge on the title page of your submitted final
exam. Exams submitted without the Honor Pledge will not be accepted.
STAT 200: Introduction to Statistics Final Examination, Fall 2015 OL4/US2 Page 2 of 6
1. True or False. Justify for full credit. (15 pts)
(a) If the variance of a data set is zero, then all the observations in this data set are zero.
(b) If P(A) = 0.4 , P(B) = 0.5, and A and B are disjoint, then P(A AND B) = 0.9.
(c) Assume X follows a continuous distribution which is symmetric about 0. If
, then .
(d) A 95% confidence interval is wider than a 90% confidence interval of the same
parameter.
(e) In a...