# Stat 200 Final Exam Essay

1909 Words Sep 23rd, 2015 8 Pages
STAT 200: Introduction to Statistics

Final Examination, Fall 2015 OL1/US1

Page 1 of 6

STAT 200
OL1/US1 Sections
Final Exam
Fall 2015
The final exam will be posted at 12:01 am on October 9, and it is due at 11:59 pm on October 11, 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
Refer to the following frequency distribution for Questions 2, 3, 4, and 5. Show all work. Just the answer, without supporting work, will receive no credit.
The frequency distribution below shows the distribution for checkout time (in minutes) in
UMUC MiniMart between 3:00 and 4:00 PM on a Friday afternoon.
Checkout Time (in minutes) Frequency Relative Frequency
1.0 - 1.9

3

2.0 - 2.9

12
0.20

3.0 - 3.9
4.0 - 4.9

3

5.0 -5.9
Total

25

2.
Complete the frequency table with frequency and relative frequency. Express the relative frequency to two decimal places.
(5 pts)
3.
What percentage of the checkout times was at least 3 minutes?
(3 pts)
4.
(5 pts)
5.
Does this distribution have positive skew or negative skew? Why?
(2 pts)

Refer to the following information for Questions 6 and 7. Show all work. Just the answer, without supporting work, will receive no credit.
Consider selecting one card at a time from a 52-card deck. (Note: There are 4 aces in a deck of cards) 6.
If the card selection is without replacement, what is the probability that the first card is an ace and the second card is also an ace? (Express the answer in simplest fraction form)
(5 pts)

STAT 200: Introduction to Statistics

Final Examination, Fall 2015 OL1/US1

Page 3 of 6

7.
If the card selection is with

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