STAT 200 Final Exam Solutions
Summer 2008 (modified version)
Note: This modified version is slightly shorter than a standard 2.5 hour final exam.
Problem 1
(a)
Since 51+74=125 patients had duration be
STAT 200 Chapter 5 Sampling Distributions
The binomial distribution for counts (Section 5.1)
1. Motivating examples:
(a) You ip a coin 10 times. How many times will a head turn up?
(b) One hundred Van
Summer 2015 STAT 200
Chapter 15
Sampling Distribution Models
Population vs. sample, parameter vs. statistic
Population vs. sample, parameter vs. statistic
The complete collection of individuals that
Exercise Questions: Chapter 4
4.1 Use Table B. We can use the random digits in Table B in the back of the text to
simulate tossing a fair coin. Start at line 109 and read the numbers from left to righ
Exercise Questions: Chapter 7
7.18 One-sided versus two-sided P-values. Computer software reports = 15.3 and P =
0.04 for a t test of H0: = 0 versus Ha: 0. Based on prior knowledge, you can justify
te
For questions 1 27, there is
only one correct answer
from those given. Mark your answer to each question
with a pencil on the sheet provided. Ambiguous responses will be considered incorrect.
1. If tw
For questions 1 27b, there is
only one correct answer
from those given. Mark your answer to each question
with a pencil on the sheet provided. Ambiguous responses will be considered incorrect.
1. If t
Summer 2014 STAT 200
Chapter 5
Understanding and Comparing Distributions
Comparing Distributions with Histograms
When we are comparing two or more distributions using the histogram,
one should plot th
6/10/2014
Calculations for Preparing a Standard Solution
Calculations for Preparing a Standard Solution
Part 2 - Preparation of the Sodium Oxalate Standard Solution:
Name: gaojunyi
Student Number: 999
Summer 2014 STAT 200
Chapters 8 & 9 Linear Regression
Objective: to describe a linear relationship between two quantitative
variables using a model. The model ts a straight line to the data, and
can b
Winter 2013 STAT 200
Chapters 20 & 21
Testing Hypotheses About Proportions
Fundamentals of Hypothesis Testing
In statistics, a hypothesis is a statement or a claim about a parameter
(a numerical char
Summer 2014 STAT 200
Chapter 19
Condence Intervals for Proportions
Let p and p represent the population proportion and the sample proportion,
respectively. If we have a suciently large sample of size
Summer 2014 STAT 200
Chapters 23 Inferences About Means
Let y be a variable that follows a certain distribution with mean and
standard deviation . If we have a large enough sample size n, and other
n
Summer 2014 STAT 200
Chapter 6
The Standard Deviation as a Ruler and the Normal
Model
How do shifting and scaling the data aect the mean, SD and other
summary statistics?
1. Shifting the data
add a c
Summer 2014 STAT 200
Chapters 14-17
Probability and Random Variables
Do you ever wonder how email spam lters work? In simple terms,
algorithms are developed to screen incoming emails. Each email messa
Summer 2014 STAT 200
Chapters 20 & 21
Testing Hypotheses About Proportions
Fundamentals of Hypothesis Testing
In statistics, a hypothesis is a statement or a claim about a parameter
(a numerical char
Summer 2014 STAT 200
Chapter 4
Displaying and Summarizing Quantitative Data
Graphical presentations of distributions of quantitative data
I. Histogram
Example: How big were the earthquakes that occurr
Summer 2014 STAT 200
Chapter 3 Displaying and Describing Categorical Data
Displaying Data for Categorical Variables
For categorical data, the key is to group similar things together.
I. Frequency tabl
1. Harris recently installed a spam lter software, but he still saw spam emails in his inbox. He
made a daily record of the number of spam emails that were delivered to his inbox over the
past 20 days
1. The following boxplots show left hand lengths. The boxplot on the left shows data from left
handers. The boxplot on the right shows data from right handers.
Which of the following statements is (ar
1. The following boxplots show left hand lengths. The boxplot on the left shows data from left
handers. The boxplot on the right shows data from right handers.
Which of the following statements is (ar
1. Harris recently installed a spam lter software, but he still saw spam emails in his inbox. He
made a daily record of the number of spam emails that were delivered to his inbox over the
past 20 days
STAT 200
Assignment #2
Due at 3pm on Fri
Aug 1, 2014
1. Recall in Assignment #1, the biologist who is concerned about mercury
contamination in lakes examined water samples and fish from 53 lakes.
a. T
Summer 2014 STAT 200
Chapters 1 & 2 Introduction and Data
What is Statistics?
Statistics is a science that involves the design of studies, data collection,
summarizing and analyzing the data, interpre
Last name: _
First name: _
Student Number: _
Signature: _
Lab Section (circle the one you are registered in):
L1A (Wed 1pm,
TA: Yumian)
L1B (Wed 1pm,
TA: Andy)
L1C (Fri 8am,
TA: Andres)
Failure to ind
For questions 1 19, circle one answer only. If making an error, write your nal answer clearly in the margin.
Ambiguous responses will be considered incorrect.
1. The mean age of ve people in a room is
Summer 2014 STAT 200
Chapter 7 Scatterplots, Association, and Correlation
Motivating Examples
Question #1:
intelligent?
Do people with bigger brains tend to be more
Statistical process of investigatio
Comparing Means Between
Two Paired Groups
Example
Here are the data on the exam grade (in percent) for
a random sample of 15 students who took the English
Provincial exam twice
Student ID
1st time
1
2