Business Statistics
Quiz 9
Name:
Student ID:
Use the following scenario and data for all questions
The useful life of one type of truck tire has a normal distribution with a mean of 52.50 thousand miles and a
standard deviation of 7.50 thousand miles. Use
Business Statistics
Quiz 10
Name:
Student ID:
Use the following scenario and data for questions 34 to 40:
The number of customers arriving at an ATM machine follows a Poisson distribution with a mean of 2.88 per
time unit. A time unit has 5 minutes. Use X
1. Discuss the differences between statistics as numerical facts and statistics as
a discipline or field of study.
2.
a) Ratio
b) City MPG = 18.2, Highway MPG = 26.1 Higher by 7.9 on average
3.
a) $10,65 billion
b) 15.86%
c) 42.85% = 43%
d) 42.85% = 43%
4
Homework 2
Directions
MGSC Business Statistics 2301 (Spencer).
Assignment #2
1. What percent of teams have won the Super Bowl 3 or more times?
7
=0,3684 37
19
2. What percent of teams have lost the Super Bowl 3 or more times?
6
=0,25=25
24
3. What percent
37. People end up tossing 12% of what they buy at the grocery store
(Readers Digest, March 2009). Assume this is the true population
proportion and that you plan to take a sample survey of 540 grocery
shoppers to further investigate their behavior.
a. Sho
Homework Chapter 3
3.
Consider the following data and corresponding weights.
a. Compute the weighted mean.
weighted mean=
3.2 ( 6 ) +2 ( 3 ) +2.5 ( 2 )+ 5(8)
=3.694
6+3+ 2+ 8
b. Compute the sample mean of the four data values without weighting. Note
the d
Chapter 9
1-8 Odd
1.
H0: 600
Ha: > 600
Since the current price is an average or mean of 600 dollars per night, we can
make the tentative assumption that the new price is not more than the price and
choose 24 as the null hypothesis.
If the sample results l
Homework Chapter 3
19. A population has a mean of 200 and a standard deviation of 50. Suppose
a sample of size 100 is selected and is used to estimate .
a. What is the probability that the sample mean will be within +/-5 of the
population mean?
Mean = 200
1.
Category
A
B
C
Total:
Frequency
60
24
36
120
Relative Frequency
50%
20%
30%
100%
3.
a. 174 degrees
b. 126 degrees
Questionnaire
17%
Yes
No
No op.
48%
35%
c.
d.
Answers
70
60
50
Answers
40
30
20
10
0
Yes
9.
a/b
No
No op.
Where do you live now?
C
R
S
T
T
HW-1
by SPSS
Note: There is a HW 1-by Calculator as well which is different than this HW1-SPSS. You can see HW-by
calculator in the Syllabus.
Hospital data for Homework using SPSS
1. Install SPSS-22 in your computer. See the procedure in Blackboard for in
Northeastern University
College of Business Administration
Syllabus Business Statistics MGSC 2301
Professor M.Habibullah
214 Hayden Hall
Spring 2016
Office hours: MW 2:00 to 2:45 PM
And by appointments
617-373-4721
[email protected]
Text: Statistics fo
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Ivy Cornelius
1.Identify the three properties (characteristics) of data, and
explain some of the descriptive measures associated with each
property. Hint: Review Lecture "ds mcc ch 3 pdf"."
a) Data should be accurate. This means that date should be well
c
En conclusin, el electroencefalograma es una prueba importante en la evaluacin
de pacientes con algn tipo de alteracin del sistema nervioso, complementaria
para la ayuda al diagnstico de diferentes procesos neurolgicos. La variabilidad
de ondas y ritmos e
Page 1 of 4
Answers to Interval Estimation; Sample Size Problems-set B
Set B
In equation 8.8, p* =p =population proportion
Solutions:
Case i:Confidence Interval for , sigma is known examples ->Use Z
2.
a.
x / n 5/ 40 .79
b.
1.
At 95%, z / n 196(5 / 40 )
Week 2 Question 2
A pilot study was conducted to evaluate the effectiveness of pain alleviation
in patients with facial shingles. 24 patients were randomly assigned to one of
2 treatment groups; rest vs. acupuncture. After two weeks of treatment, the
subj
Week 2 Question 1
Are a certain sampled population of women in a poor urban setting as optimistic as
women nationally?
Click the link below to download Week 2 Discussion Question 1. The data contained was
collected from 1,000 women in the area around down
Chapter 7
x‘
V 2
A/chlon 1 . .
,/8uppose that the mean expenditure per customer at a tire store is $85 with a standard dev1atlon of $9. If a
random sample of 40 customers is taken, what is the probability that the sample average expenditure per
customer
Lately there have been more and more companies who are beginning to use cloud
computing. Some of these companies include Amazon, Verizon, Cisco, IBM, and Google.
Amazon and Google are two of the biggest names in cloud computing today. Here we can take a
l
Champions Losses
Kentucky
Connecticut
Duke
North Carolina
Kansas
Florida
Florida
North Carolina
Connecticut
Syracuse
Maryland
Duke
Michigan St.
Connecticut
Kentucky
Arizona
Kentucky
UCLA
Arkansas
North Carolina
Duke
Duke
UNLV
Michigan
Kansas
Seed #
2
9
5
Slide 1
Hello, I would like to share with you all this morning a little about a sport I recently just started
playing here at st. josephs called Gaelic Football. It is the most popular sport in both Ireland
and Northern Ireland in terms of attendance and
Tyler Gallen, Mike Ferrier, Tom Harrington, Nate Houck
Cloud Computing
Information Systems (Tues/Thurs 8:30)
Cloud computing is a revolutionary facet of Internet technology that has grown
exponentially in the past fifteen years. To understand the foundati
Nathan Houck
There have been many changes to college teams and their mascots and team nickname.
While the NCAA has stepped into make changes to prevent racist or derogatory team names in
the past there have been many cases where schools have made name cha
Nathan Houck
4/16/13
Business Analytics
Final Project
The first thing I did for our classs final business analytics project was gather the
necessary data. The 26 observations I used were from the NCAA college basketball tournament
champions over the last
General Instructions
1. The following worksheet may be used to complete the exercise/problem.
You may need to refer to your textbook for additional information.
2. The blue cells are for data entry. Enter text in the T cells, formulas in the F cells,
doll
General Instructions
1. The following worksheet may be used to complete the exercise/problem.
You may need to refer to your textbook for additional information.
2. The blue cells are for data entry. Enter text in the T cells, formulas in the F cells,
doll