Homework #2 Solutions Stat 1450
Chapter 3 (26, 32, 35, 36, 37, 40, 42, 48, 50)
3.26. For each distribution, take the mean plus or minus two standard deviations. For mildly
obese people, this is 373 2(
STAT 1450 COURSE NOTES CHAPTER 20
INFERENCE ABOUT A POPULATION PROPORTION
Introduction
The inference we did in Chapters 14-18 revolved around the population mean. If we want to do
inference about the
STAT 1450 - Exam 1 Review
Note: This review is slightly longer than the actual exam will be. Also, these questions are representative
of the types of questions you could see, but there are no guarante
STAT 1450 - Exam 1 Review Solutions
Note: This review is slightly longer than the actual exam will be. Also, these questions are representative
of the types of questions you could see, but there are n
STAT 1450 Recitation Activity 13
Inference about a Population Proportion
Name: _Victoria Hsu_
TA:
_Deborah K._
Date: _4/15/17_
OBJECTIVE
Students will compute confidence intervals for a proportion.
Chapter 13: Normal Distributions
Mean (center of distribution): mu
Standard deviation: sigma
Density curves: A curve with area 1 beneath it that displays the distribution of a quantitative variable.
STAT 1450 COURSE NOTES CHAPTERS 15
TESTS OF SIGNIFICANCE: THE BASICS
Guided Notes associated with the Lecture Video for Sections 15.1&15.2
Connecting Chapter 15 to our Current Knowledge of Statistics
STAT 1450 COURSE NOTES CHAPTER 18
INFERENCE ABOUT ONE POPULATION MEAN
Guided Notes associated with the Lecture Video for Sections 18.1&18.2
Connecting Chapter 18 to our Current Knowledge of Statistics
STAT 1450 COURSE NOTES CHAPTER 19
TWO SAMPLE PROBLEMS
Connecting Chapter 18 to our Current Knowledge of Statistics
Assuming appropriate simple conditions apply:
Parameter of interest
Point Estimate
(k
STAT 1450 COURSE NOTES CHAPTER 20
INFERENCE ABOUT A POPULATION PROPORTION
Guided Notes associated with the Lecture Video for Section 20.1
Connecting Chapter 20 to our Current Knowledge of Statistics
A
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Table entry for C is the critical
value t* required for confidence
level C
Homework #3 Solutions Stat 1450
Chapter 4 (28, 34, 46)
Chapter 5 (28, 34, 36, 37, 53, 56)
4.28. (a) The scatterplot shows a negative linear relationship. Because the relationship is linear,
correlatio
Homework #1 Solutions Stat 1450
Chapter 1 (28, 30, 32, 42, 44)
Chapter 2 (30, 34, 36, 44, 50)
1.28. It is very difficult to estimate precisely, but perhaps 60% (65%) of the Hispanic population
in the
STAT 1450 COURSE NOTES CHAPTER 11
SAMPLING DISTRIBUTIONS
The things that we have done so far in this course have been building blocks to get us to what we
do next: inference. When we take information
STAT 1450 COURSE NOTES CHAPTERS 14, 18, 16
CONFIDENCE INTERVALS ABOUT ONE POPULATION MEAN
We have now come to the inference part of the courseusing sample statistics to estimate
population parameters.
INTRODUCTION TO THE PRACTICE OF STATISTICS (Stat 1450)
Spring 2013 Syllabus
Statistical thinking will one day be as necessary for efficient citizenship as the ability to read and write.
H.G. Wells (18
STAT 1450 COURSE NOTES CHAPTERS 10 AND 12
INTRODUCING PROBABILITY AND GENERAL RULES OF PROBABILITY
Probability is our bridge from data collection and analysis to inference. The rules of probability
wi
STAT 1450 COURSE NOTES CHAPTER 23
TWO CATEGORICAL VARIABLES: THE CHI-SQUARE TEST
Introduction
Our work in Chapter 21 allowed us to compare the proportions of successes in two groups. When we
did this,
Homework #4 Solutions Stat 1450
Chapter 6 (20, 21, 22, 23, 24, 27, 28, 29)
6.20. The marginal distribution of marital status is found by taking, for example, 337/8235 =
0.041, or 4.1% for the Single g
Chapter 19: Two-Sample Problems
STAT 1450
19.0 Two-Sample Problems
Connecting Chapter 18 to our
Current Knowledge of Statistics
Population
Parameter
Point Estimate
Confidence
Interval
Test Statistic