Chapter 08
True / False Questions
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2. All estimators are biased sin
Chapter 09
One-Sample Hypothesis Tests
True / False Questions
1 The level of significance refers
. to the probability of making a
Type II error.
True False
8 When your sample size
. increases, the chance of both
Type I and Type II error will
increase. Tru
61 In constructing a 95 percent confidence interval, if you increase n to
. 4n, the width of your confidence interval will (assuming other things
remain the same) be:
A. about 25 percent of its former
width.
B. about two times
wider.
C. about 50 percent o
1. Given the contingency table shown here, find P(B).
a.
b.
c.
d.
2.
a.
b.
c.
d.
3.
.85
.25
.22
.45
The probability that event A occurs, given that event B has occurred, is an example
of
a conditional probability.
a joint probability.
more than one of the
1. Given the contingency table shown here,
find P(V | W).
The event "the price of stock X has
increased and the price of stock Y has not
increased" may be written as
a. X Y
b. X Y
c. X Y
a. .5875
b. .4000
c. .0950
d. .2375
2. A company is producing two t
1.
a.
b.
c.
d.
The Excel formula for the standard deviation of a sample array named Data is
= STDEV(Data
= STDEVP(Data)
= STANDEV(Data)
= SUM(Data)/(COUNT(Data)-1)
2. What does the graph below (profit/sales ratios for 25 Fortune 500 companies) reveal?:
a.
2016
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Contents
1 Introduction & Demographics
4
2 Who responded to the Skill Up survey?
Who do respondents work for?
Company and team size
SOLUTION TO COMBINATORICS EXERCISES
FROM STATISTICS 1181 SUPPLEMENT
#2. Here we are counting the number of permutations (arrangements) of 10
objects taken 10 at a time. The number of ways is therefore
10 !
10P10 =
= 3,628,800
1010!
But if we are intereste
1. Indicate the scale of measurement (nominal, ordinal, or interval) on each of the variables in this
data.
Column 1 TYPE is Nominal
Column 2 MARITAL is Nominal
Column 3 AGE is Interval
Column 4 income is Interval
Column 5 COLLAT is nominal
Column 6 LC is
STAT 1181
HW 3
You may do this HW in pairs. If you do so, hand in only one paper with both your names on it.
1. A financial advisor classifies her clients based on their net worth (less than $100,000, between
$100,000 and $500,000, or more than $500,000)
BINOMIAL RANDOM VARIABLES
Conditions:
Suppose we have an experiment (here called trial), and we classify all of its possible outcomes into two
categories: success and failure. And we repeat this experiment n times. (
Exercises on Discrete Random Variable
#1. Suppose that the time a car is parked at a car park follow the Normal distribution with
mean 2 hr and 15 minutes, and standard deviation 35 minutes. The car park charges $3 for
the first hour, and $2 for each addi
INTRODUCTION TO RANDOM VARIABLE
Definition: A random variable is a function that assigns every outcome in the sample space to a
real number.
1st die result
Example: Two balanced dice are tossed, and the number of dots on the up-turned sides are
noted. The
Reading StatGraphics Regression Output (v. XVI.1)
Here we are regressing Y=Exam-Pct (Exam mark in percent) on X=EXMSTUDY (no. of hours
spent studying for the exam).
The Statistics we use are highlighted in bold.
Simple Regression - Exam-Pct vs. EXMSTUDY
D
CourseKey Classroom Response System
This class will be using the CourseKey (www.thecoursekey.com) classroom
response system throughout the semester. You can use Apple and Android
smartphones, or a Tablets or Laptop.
You can visit the CourseKey Overview (h
Una congeladora comercial debe mantener la temperatura seleccionada con poca variacin. Las
especificaciones indican que la desviacin estndar no debe ser mayor a 4 grados (o la varianza a 16
grados2).
Una muestra de 16 datos
es evaluada y da una varianza m
Date updated:
Created by:
What is this data?
Home Page:
Data website:
Companies in each industry:
Variable definitions:
Industry Name
Advertising
Aerospace/Defense
Air Transport
Apparel
Auto & Truck
Auto Parts
Bank (Money Center)
Banks (Regional)
Beverage
L ibe rt
y O rd en
O rd en
PAG 1
L ibe rta
SISTEMA DE GESTIN DE LA SEGURIDAD
Y SALUD EN EL TRABAJO (SG-SST)
GUA TCNICA DE IMPLEMENTACIN DEL SG-SST PARA MIPYMES
GUA TCNICA DE IMPLEMENTACIN PARA MIPYMES
y O rd en
PAG 2
L ibe rt
PRESENTACIN
El Ministerio de
Probability and Probability Distribution
1) Which of the following is an example of a random experiment?
A) A customer inspects a delivery and finds an error.
B) Marketing budgets a 10% increase in advertising.
C) The post office misplaces a letter.
D) A
HW1!
!
1.24 !
a. Population: 40,858 members of the student body in Madison.!
Sample: 100 students in Madison.!
!
b. It does not, because the sample size of 100 among population of 40,858 is too small. Hence
we could not estimate that 29% of the entire pop
Chapter 19 Vocab:
Violence: aggressive behaviors that produce injuries and can result in death
Intentional injuries: injury, death, or psychological harm inflicted with the intent to harm
Unintentional injuries: injury, death, or psychological harm caused
Chapter 6 Vocab
Fertility: persons ability to reproduce
Birth control (contraception): methods of preventing conception
Conception: fertilization of an ovum by a sperm
Perfect-use failure rate: the number of pregnancies (per 100 users) likely to occur in
Chapter 5 Vocab
Sexuality: thoughts, feelings, and behaviors associated with being male or female, experiencing
attraction, being in love and being in relationships that include sexual intimacy
Sexual identity: recognition of oneself as a sexual being; a
Sex
Female and Male: Genetics and Hormones
Hormones=chemical messengers
Female reproductive system:
-ovaries
-fallopian tubes
-cervix
-vagina
-clitoris
-ovulation: release of mature or ripe ovum
-menopause: cessation of the female menstrual cycle
Male Rep
Managing Stress Lecture
Stress:
-Mind/Body medicine: mind affects body, body affects mind
-stimulus/event that causes our bodies to react or respond
-real or imagined threat ton ones being; leads to a series of physiological responses or
adaptations
What
Chapter 14 Vocab
Gonorrhea: second most common bacterial STI in the US; if untreated, may cause sterility
Syphilis: one of the most widespread bacterial STIs; characterized by distinct phases and
potentially serious results
Human papillomavirus (HPV): a g
Managing Stress Lecture
Stress:
-Mind/Body medicine: mind affects body, body affects mind
-stimulus/event that causes our bodies to react or respond
-real or imagined threat ton ones being; leads to a series of physiological responses or
adaptations
What
Exam 3 Review
*Focus on PPT*
15- Sexual Health (pregnancy and contraception, most common STDs, gender identity terms,
HPV, HIV)
16- Stress
7-Alcohol
6- VOICE
6- Sleep
Understanding Sexuality and Reproductive Choices PowerPoint
-chromosome of genders
-fema
Sleep Video Review Questions
Please note: You do NOT need to turn in your answers. Exam 3 will include questions on these
videos. As you watch the videos, find the answers to these questions and then use them to
guide your study for the exam.
How much of