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Chap 1: Introduction to statistics.
1.1 Sampling
1. Definitions
a) Statistics is the study of procedures for collecting, describing, and drawing conclusions from
information.
b) A population is the entire collection of individuals about which informatio
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9.2 Hypothesis Tests for a population mean, standard deviation known.
1. Perform hypothesis tests with the critical value method
Recall: i) The z-score tells us how many standard deviations is from .
ii) When the sample size is large (n 30), the sample
QUIZ 3 REVIEW
ECON 1301Introduction to Economics Online
Quiz consists of 35 multiple choice questions and covers the following chapters:
Chapter 5: Elasticities of Demand and Supply
Chapter 6: Efficiency and Fairness of Markets
CHAPTER 5
1. Know the ter
QUIZ 5 REVIEW
ECON 1301Introduction to Economics Online
Quiz consists of 30 multiple choice questions and covers the following chapters:
Chapter 9: Externalities: Pollution, Education, and Health Care
Chapter 10: Production and Cost
CHAPTER 9
1. What ar
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Chapter 7 The Normal Distribution
7.1 The Standard Normal Distribution
1. Use a probability density curve to describe a population
Curve used to describe the distribution of continuous random variable is probability density curve.
The histogram, figure
Quiz # 15 (Due date: 16 March)
Math 1442
Name:_
Q1) A local pizza parlor is offering a half-price deal on any pizza with one topping. There are eight
toppings from which to choose. In addition, there are three different choices for the size of the pizza,
1
Chapter 7 The Normal Distribution
7.1 The Standard Normal Distribution
1. Use a probability density curve to describe a population
Curve used to describe the distribution of continuous random variable is probability density curve.
The histogram, figure
Quiz # 15 (Due date: 16 March)
Math 1442
Name:_
Q1) A local pizza parlor is offering a half-price deal on any pizza with one topping. There are eight
toppings from which to choose. In addition, there are three different choices for the size of the pizza,
QUIZ 2 REVIEW
ECON 1301Introduction to Economics Online
Quiz consists of 32 multiple choice questions and covers the following chapters:
Chapter 3: The Economic Problem
Chapter 4: Demand and Supply
CHAPTER 3
1. Know the term: production possibilities fr
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Chapter 4: Correlation & Regression
4.1 Correlation
1. Construct scatterplots for bivariate data
In a scatterplot, each individual in the data set contributes an ordered pair of numbers, and each ordered pair is
plotted on a set of axes.
Figure above; S
MATH 1414-063
College Algebra(Pre-Cal track)
Instructor: Bhawana Ranjan
Email: branjan@alamo.edu
Text Book: Algebra & Trigonometry: 10th ed, Sullivan;
Pearson. ISBN- 9780321999276 (A la carte edition)
Class Days & Times: Sat: 9:00 am -12:35 pm
Class Locat
1. In a quality control inspection items are classied as having a minor defect, a major defect, or as
being acceptable. A carton of 10 items contains 2 with minor defects, 1 with a major defect, and 7
acceptable. Three items are chosen at random from the
1. Suppose that n people take a blood test for a disease, where each person has probability p of having
the disease, independent of other people. To save time and money, blood samples from k people are
pooled and analyzed together. If none of the k person
1. Let X be a random variable that takes possible values at non-negative integers and has cumulative
distribution function
F (x) = P (X x) = 1 2x for x = 0, 1, 2,
(a) Find the probability function of X .
Soln: f (x) = P (X = x) = F (x) F (x 1) = 2(x1) 2x
Short Solutions to Stat 230 Test 2, Feb 1, 2012
1. An irregular die is loaded to give the probabilities P (cfw_1) = 0.2, P (cfw_2) = 0.4, P (cfw_3) = P (cfw_4) =
P (cfw_5) = P (cfw_6) = 0.1. The die is rolled 8 times and results from dierent rolls are ind
Short Solutions to Stat 230 Test 1, Jan 18, 2012
1. Four letters addressed to individuals W , X , Y and Z are randomly placed in four addressed envelopes,
one letter in each envelope.
[4] (a) List a 24-point sample space for this experiment. Be sure to ex