STAT 20000
2013 Winter
Practice Final Exam
Name (print):
ID #
Important: read the following instructions carefully.
1. Do not sit directly next to another student.
2. Do not turn the page until told to do so.
3. Take note of your exam number written in th
Stat200, Spring 2008
Homework 8
March 11, 2008
21.2 [8 points, 4 each]
(a) The sample is like 500 draws from a box with 25,000 tickets; each ticket is marked 1 (has
a computer) or 0 (does not have a computer). The number of sample households with
internet
Stat200, Winter 2008
Homework 5
CA: Han Han
February 21, 2008
Grader: 10 pts each
1. Chapter 13, Review Exercise 3
Option (ii) is better, because there are a lot more ways to win:
clubs diamonds hearts spades
hearts diamonds clubs spades
etc.
2. Chapter 1
STAT 20000
2011 Winter
Final Exam
Mar 14, 2011
1. Pass or Not [14 points]
A multiple-choice test consists of 50 items, each with 4 choices. A student is able to eliminate one
of the choice on each question as incorrect and chooses randomly from the remain
Tommy Tenuta, Shelp 2nd hour, 9-23-14
Falling Dominos
Procedure:
1. Take 20 dominos that have the same thickness, a measuring tape, and a timer
2. Space dominos at 1 cm, 1.5 cm, 2 cm, 2.5 cm, 3 cm, and 4 cm
a. For each of the five spacings, knock down 10,
1.)
TITLE: These Tiny Little Robots Are Helping Us Understand the Science of Swarms
SOURCE: http:/io9.gizmodo.com/these-tiny-little-robots-are-helping-us-understand-the-
1719528396
DATE ACCESSED: 02-13-2017
SUMMARY (282 words):
Tommy Tenuta
TITLE: Physicists Make the Case That Our Brains' Learning Is Controlled by Entropy
SOURCE: http:/www.sciencealert.com/physicists-show-that-our-brains-s-learning-is-
controlled-by-entropy
DATE ACCESSED: 02-20-2017
Hypothesis Testing
Ex: Let p1 and p2 be the proportions of children who would develop the measles in control
and treatment/vaccinated populations.
o Claim: incident rate of measles is reduced for vaccinated children
Tommy Tenuta
1.)
World Population= 7.5 billion people1
Amount of ground Space per person = .1 square meters2
Area of Chicago = 606,100,000 square meters3
Population * space per person = ? ; compared t
Stat 200, Winter 2008
Homework 3
CA: Han Han
Chapter 8, Problem 6 [8 points]
False. A correlation of r = 0.50 does not mean that the linear relationship is twice as linear
as the relationship with r = 0.25; it just means more. Refer to the last paragraph
Stat200
Solutions - Homework 4
Chapter 10, Problem 5 [10 points]
a. False.
b. False. The correlation coecient measures association, not causation. Also, we are not
told what the SDs are (in pounds) for both of the variables.
c. True.
d. True. The correlat
STAT 200 - Winter 2008
Homework 7
CA : Han Han
Chapter 18, Problem 2[8 points]
(a)We estimate that the sum of four hundred draws, made with replacement, from this box will be greater
than 1500 with 99% chance. The average and SD of the box are 4 and 2.24,
Chapter 14: More About Chances
Recall
Complementation Rule
Conditional Chance
Multiplication Rule
Independence & Independence Rule
Chap 14:
Addition Rule
Ch14 - 1
A pair of dice are to be thrown. What is the chance of getting a
total of 7 spots?
There are
Chapter 27: More Tests for Averages
Overview of Tests of Signicance in STAT200
Case I: One box, testing its average (percentage of 1s)
against an external standard Chapter 26.
Case II: Two boxes, testing for the equality of their
averages (percentages of
Chapter 15: The Binomial Formula
We write
1 2 3 . . . (n 1) n = n !
n ! is read n factorial.
1! = 1
2! = 1 2 = 2
3! = 1 2 3 = 6
4 ! = 1 2 3 4 = 24
By convention, 0 ! = 1.
Ch15 - 1
A Simple Fact
A die is to be rolled n times, the chance that it lands ace e
Stat200, Winter 2008
Homework 1
CA: Han Han
Chapter 2, Problem 1 - State and national crime [16 points]
a. Too hasty: what about population size? Michigan may include the big bad city, but
Minnesota has twice the population of Michigan. The crime rate is
Chapter 16: The Law of Averages
What Does the Law of Averages Say?
Two fair coins will be tossed 100 times and 1000 times
respectively. Let N100 and N1,000 be the respective numbers of
heads. Which of the following is more likely to be smaller?
|N100 50|
17.1 The Expected Value for the Sum of the Draws
Suppose 40 draws are to be made (at random with replacement)
from the box
$2 $1 $1 $1
Youd expect the sum of the draws to be about
Youd expect to draw $2 around
times.
Youd expect to draw $1 around
times.
Y
Stat200, Spring 2002
Homework 2
January 29, 2008
Chapter 4, Problem 6 - [12 points]
This problem requires matching the correct values of average and median to the graphs. The
median is dened as the point where half (or more) of the values fall below the p
Chapter 13: What are the Chances?
The chance of something happening gives the percentage of
time it is expected to happen, when the basic process is done
over and over again, independently and under the same
conditions.
Examples:
Tossing a coin:
Chance of