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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.

Answer all 25 questions. Make sure your answers are as complete as possible.

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.

Record your answers and work on the separate answer sheet provided.

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...

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