ADMS 2320: FINAL EXAM PREP · Fall 2024

CHAPTER LESSONS - FREE
Chapter 10: Introduction to Estimation
7 Topics | 1 Quiz
Introduction to Estimation
Point Estimators
Confidence Interval Estimate of the Mean (Q1)
Interpreting Confidence Intervals (Q2a–b)
Confidence Interval Width vs. Confidence Level (Q2c–d)
Confidence Interval Width vs. Sample Size, Standard Deviation, and Mean (Q2e–i)
Sample Size Determination (Q3)
Chapter 10 Quiz
Chapter 11: Introduction to Hypothesis Testing
6 Topics | 1 Quiz
Steps of a Hypothesis Test
When to use the z-test of One Population Mean
The p-Value
Calculating the Probability of Type II Error
Probability of Type II Error – Just the basic steps
Probability of Type II Error – Two Tailed Example
Chapter 11 Quiz
2022 Summer Final
9 Topics
2022 Summer Final Exam PDF
Q1a) z-Test of a Single Population Mean
Q1b) t-Estimate of the Difference in Two Population Means
Q2a) Regression Model
Q2b) F-Test of Validity
Q2c) t-Test of the Coefficients
Q3a) Using a Confidence Interval to Test a Hypotheis
Q3b) F test of the Ratio of Two Variances
Q3c) One Way ANOVA F Statistic
CHAPTER LESSONS - PREMIUM
Chapter 12: Inference About a Population
6 Topics | 1 Quiz
Introduction
t-Test and Estimation of One Population Mean
χ²-Test and Estimation of One Population Variance
z-Test of One Population Proportion
Finding and Using the p-Value
z-Estimate of One Population Proportion
Chapter 12 Quiz
Chapter 13: Inference about Comparing Two Populations
7 Topics | 1 Quiz
Introduction
F-test & Estimate
Equal Variances t-Test
Unequal Variances t-Test
Matched Pairs t-Test & Estimate
z-Test of Proportions (CASE 1)
z-Test of Proportions (CASE 2)
Ch. 13 QUIZ
Chapter 14: Analysis of Variance
3 Topics | 1 Quiz
ANOVA (Raw Data)
ANOVA (Summary Data)
Partially Completed Outputs
Chapter 14 Quiz
Chapter 15: Chi-Squared Tests
3 Topics | 1 Quiz
Goodness of Fit (equal proportions)
Goodness of Fit (given a distribution)
Contingency Table Test
Chapter 15 Quiz
Chapter 16: Simple Linear Regression and Correlation
10 Topics | 1 Quiz
Introduction to Simple Linear Regression
Sums and Statistics
Alternate Formulas
The Least Squares Regression Line
Interpreting the Coefficients
Standard Error of the Estimate
Test of the Slope
The Coefficient of Determination
Coefficient of Correlation vs. Coefficient of Determination
Prediction and Confidence Intervals
Chapter 16 Quiz
Chapter 17: Multiple Regression:
11 Topics | 1 Quiz
Introduction
Question 1a
Question 1bc
Question 2a
Question 2b
Question 2c
Question 2d
Question 2e
Question 3.1
Question 3.2
Question 3.3
Chapter 17 Quiz
PAST EXAMS - PREMIUM
2021 Winter Final
8 Topics
2021 Winter Final Exam PDF
Question 1 Solutions
Question 2a Solutions
Question 2b Solutions
Question 2c Solutions
Question 3.1 & 3.2 Solutions
Question 3.3 Solutions
Question 3.4 Solutions
2021 Summer Final
10 Topics
Q1a) Chi-Squared Test of a Contingency Table
Q1b) z Estimate of Proportion
Q1c) z-Test of a Proportion vs Chi-Squared Goodness of Fit Test
Q2a) F-Test of the Ratio of Two Variances
Q2b) Chi-Squared Estimate of Variance
Q3a) Regression Model
Q3) Filling in the Blanks
Q3b) Test of the Validity of the Model
Q3c) Test of a Slope Coefficient
Q3d) Estimate of Y
2020 Fall Final
10 Topics
2020 Fall Final Exam PDF
Q1a) t-Test of Difference in Means
Q1b) z Estimate of a Proportion
Q1c) z Test of a Proportion (p-value)
Q2) Chi-Squared Test of a Contingency Table
Q3) Fill in the Blanks
Q3a) Regression Equation (Not the Model)
Q3b) Test of the Validity of the Model
Q3c) Changing Units in a Regression Equation
Q3d) P-value
Older Past Final Exams
4 Topics
2012 Summer
2010 Fall
2009 Fall
2005 Fall
CHEAT SHEET - PREMIUM
Reference Sheet PDF – Final Exam
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Confidence Interval Width vs. Confidence Level (Q2c–d)

ADMS 2320: FINAL EXAM PREP · Fall 2024 Chapter 10: Introduction to Estimation Confidence Interval Width vs. Confidence Level (Q2c–d)

Smaller confidence intervals are better as they give us a more precise estimate of the mean. A simple way to affect the width of the interval is to change the confidence level. Watch here to see how.

Test your understanding:

Chapter 10 Questions PDF

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