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SECTION 7: Exercises
7.1
A sample of 400 observations taken from a population produced a sample mean equal to 92.45 and a
standard deviation equal to 12.20. Make a 97% confidence interval for .
x (z/2 )(Sxbar )
= 92.45 (z0.015) (Sxbar )
= 92
Pennsylvania
Rhode Island
Vermont
12,281,054
1,048,319
608,827
45,180,028
24%
26%
22%
24%
2,947,453
272,563
133,942
10,607,653
23.5%
27.2%
2.3%
1.3%
100.0%
6.52%
0.60%
0.30%
23.48%
1. the weighted percentage of mid west is 25.3% and north east is 23.5%. 2
Blair
Supercrunchers
Chapter 1 Whos doing your thinking for you?
Questions
1. Identify from Chapter 1 a quantitative application discussed by the author that you were already
familiar with. Pick one and describe what you already knew before reading the ch
SECTION 1: Exercises
1.1
Explain whether each of the following constitutes a population or a sample.
a. Ages of all members of a family
b. Number of days missed by all employees of Acme Direct during the month of July
c. Marital status of 50 persons selec
a.
b.
c.
d.
e.
Scores of all students in a Statistics for Direct Marketers class
Yield of corn per acre for 10 pieces of land
Weekly salaries of all employees of Acme Direct
VCRs owned by 100 families in Reno
Number of computers sold during the past week
SECTION 3: Exercises
3.1
The following data give the number of speeding tickets issued in a San Antonio suburb in the past 12
days. Using a pencil and calculator, find the mean, median and mode. Perform this same exercise using
Excel does it match what yo
IN-CLASS/HOMEWORK MEDIA MATH ASSIGNMENT
CAMPAIGN II: PLANNING & MANAGEMENT (Fontana)
SHOW YOUR WORK Please put your name on each page
DUE 6/20 by 6:10 (if emailed) or handed to me at the start of class
Name:
Blair
Email:
[email protected]
1. Circulation: 15,
INSTRUCTIONS:
The following data represents smoking percentages from the Center for Disease Control
based on random samples of roughly 1,000 names taken from each state that comprises.
the midwest and the northeast.
Also provided are census population num
SECTION 1: Exercises
1.1
Explain whether each of the following constitutes a population or a sample.
a. Ages of all members of a family
b. Number of days missed by all employees of Acme Direct during the month of July
c. Marital status of 50 persons selec
Supercrunchers
Chapter 1 Whos doing your thinking for you?
Questions
1. Identify from Chapter 1 a quantitative application discussed by the author that you were already
familiar with. Pick one and describe what you already knew before reading the chapter.
SECTION 3: Exercises
3.1 The following data give the number of speeding tickets issued in a San Antonio suburb in the past 12
days. Using a pencil and calculator, find the mean, median and mode. Perform this same exercise
using Excel does it match what yo
G25.2651: Advanced Statistical Mechanics
Midterm Exam
Instructions: For this take-home exam, only lecture notes and the recommended textbooks for the course are permitted. You may consult math books if you have diculty guring out how to manipulate a parti