5.8 ex. how many different way are there
to arrange the 6 letters in Sunday?
6*5*4*3*2*1=720 Permutation-ordered
arrangements of distinct objects. If we
wish to know the number of r
permutatuins of n distinct objects it is
denoted as
Combinations are unor
Sampling error the distance between a
statistic and the parameter it is estimating.
Sampling distribution the probability of a
statistic over all possible samples. If you
pick a bigger sample your error will
decrease. The average value of across all
possi
STA 291 Section 6.1 Homework Solutions 5) a. discrete b. continuous c. continuous d. discrete e. discrete f. discrete g. continuous h. discrete 7) S = cfw_ - 30000,-5000,20000,45000
Use the following information for questions 9 through 13.
Period 1 Period 2
Good 1
Price $15 $20
Quantity 20,000 18,000
Good 2
Price $25 $20
Quantity 12,000 18,000
9. The price elasticity (Ed) for Good 1 is:
a. -.368
b. -2/3
c. -3/2
d. -2.714
e. -3
10. Th
4. If the demand curve is a horizontal line:
a. demand is perfectly elastic
b. demand is perfectly inelastic
c. demand is unitarily elastic
d. demand is relatively inelastic
5. When demand is price elastic, a decrease in price results in a(n):
a. decrease in total revenue on the good
b. unfavorable shift in tastes and preferences
c. increase in supply of the good
d. increase in total revenue on the good
6. At the point where
Zscores-gives you the number of standard deviations an observation is above or below the mean.
Regression- to predict a value difficult to measure(Y) based on an easy to measure (X) Empirical Rule- used for
mound shape distribution) skewed and symmetric.
Statistics-the study of how to collect
organize, analyze and interpret
information.
Population-group of intrest.
Census-a measurement taken from the
entire population. Its a lot more
expensive.
Margin of Error-comes from everyone
didnt get to take the sur
STA 291 Section 6.4 Homework Solutions 9) a. x 5.00 -2.50 -5.00 18 2 P( x ) 38 = .470 = .053 38 18 = .470 38 x P( x ) 2.3500 -0.1325 -2.3500
b. E ( x ) = -$0.13 c. For 100 bets the casino will gain $13.25. The more bets, the more money made. 10) a. x -$5.
Zscores-gives you the number of standard deviations an observation is above or below the mean.
Empirical Rule- used for mound shape distribution) skewed and symmetric. It is the percentage of observations .
68% of data fall within 1 standard deviation of
1.
2.
3.
4.
5.
6.
Jessica Shawky
Exam 3 Take Home
11/23/11
Describe a time when you transformed a negative communication climate into a positive one. One
day I was at work and I saw a co-worker was upset and complaining. I went up to her, I could she was
HIS 109 Lecture
1/30/12
Dana Johnson
No Outline Today
Notes
The New Colossus: Industrializing America
Period from end of Civil War to turn of 20th century
West and south are both deeply effected by industrialization .
By 1900 more railroad miles in US tha
HIS 109 Lecture
2/1/12
Dana Johnson
Outline
Horatio Algers America Winners Take All?
Rags to Riches
Horatio Alger Heroes
Talent? Drive? Luck?
Social Darwinism Survival of the Fittest
Opportunity: Did folks rise? How far?
Andrew Carnegie
Pushcarts to shopk
HIS 109 Sections 002, 003, 011
Short Essay #1 The Triangle Fire: A Brief History with Documents Argersinger
Due dates
Section 002 Tuesday 1/31
Section 003 Thursday 2/2
Section 011 Tuesday 1/31
Questions / Prompts pick one
1) The New York Shirtwaist Strik
Identifications
1. Money Power- After the civil war the banks and the monopolists held all the power in the country. The
money power was what controlled the country. There were 5,000 millionaires and 2 million tramps,
because of the money power.
2. Emanci
Ch 8 Some Useful Continuous Probability Distributions
8.1 Properties of Continuous Probability Distributions
A smooth curve known as the density function, is used to represent the probability
distribution of a continuous random variable.
The curve must ne
1)
Traditional:
i) Systems design is influenced by compatibility issues, including
existing hardware and software platforms and legacy system
requirements.
ii) Systems are designed to run on local and wide-area company
networks.
iii) Systems often utilize