2. Under Federal education law, No Child Left Behind (NCLB), all 8th graders must take a
standardized achievement test. Each state can implement its own test to assess achievement. In
Illinois, ISAT a
3. The table below shows the joint probability distribution of employment status (employed and
unemployed) and education (no college degree and college degree) based on a sample of 74,000
individuals
8. Gallup Canada bases its polls of Canadian public opinion on telephone samples of about
1,000 adults, the same sample size as Gallup uses in the U.S. Canada's population is about oneninth as large a
4. Ben and Meghan race to see who gets home from work first (the loser has to make dinner).
Meghan gets home at 7pm every day (because the trains run on time), but Bens commute is a
normally distribut
6. The mean score in Stats 310 last year was 65 (note: numbers are made up). The TAs
determined that the mean score of the male students was 62 and that of the female students was
80. What was the pro
The value of diversification and compound interest: Steve invests in a portfolio that consists of 70%
index funds and 30% international mutual funds. Suppose that in the long run the annual real
retur
3.
The National Association of Colleges and Employers (NACE) Fall Salary Survey report shows that
the current class of college graduates earned an average starting salary offer of $48,633. Suppose
the
EssentialsofStatisticsforBusinessandEconomics,5e
Chapter3
DescriptiveStatistics:NumericalMeasures
Solutions:
1.
x
xi 75
15
n
5
10,12,16,17,20
Median=16(middlevalue)
2.
x
xi 96
16
n
6
10,12,16,17,20,
Chapter 3
Problem 3.09
a) 2
b) 3
c) 2
d) [B]
Problem 3.14
Plot 2 is correct.
Problem 3.15
a) Yes
b) [C] 34%
c) [A] 14%
d) [B] 2
e) [D] 12
Problem 3.24
a) 17955
b) 81960
c) 53000
d) The lack of upper a
Sevinc Dundar
Chapters 11, 13
Problem 11.01
A) TRUE
B) TRUE
a) quantile
65
b) quantile
c) 90 to 110
d) 81 to 119
e) 0.41
Problem 11.02
a) B
b) A
c) C
Problem 11.21(NOT part 1 or 2)
3) 3.33
4) 3.00
5)
Chapter 1
Prob 1.02
(a) > seq(5;8)togive[1] 5 6 7 8
[B] Use a comma instead of a semi-colon to sep- arate arguments: seq(5,8).
(b) > cos 1.5 to calculate the cosine of 1.5 radians
Use parenthesis befo
Super Stats Squad
Nathalie Kenny, Sevinc Dundar, Logan Cloutier
9/28/2015
Question 1
There are 20,000 cases and 9 variables in this data set.
genhlth - categorical
exer
Seatbelts Exercise
Sevinc Dundar
November 22, 2015
Question 1
What constitutes an observation in this data set? How many
observations are in this data set? How many time periods? What is the
entity in
Condence intervals and p values
Introduction Kaplan does not give you enough on tvalues, pvalues, and condence intervals. Other books
I thought to assign give you to much. So, here I have prepared a h
Challenge! (or homework if we run out
of time)
You can assign lots of different types of things to objects. The
command xyplot(y~x) will plot the values in x on the x axis
against the values in y on t
Part 1. Show that the sum of independent uniformly distributed variables is approximately normally
distributed. Here is some pseudo-code: 1) create an empty dataset with 1000 observations (use the
set