Chapter 4
Basic Probability
Chapter Goals:
After completing this chapter, you should be able to:
Explain three approaches to assessing probabilities
Apply common rules of probability( Addition Rule & Multiplication Rule)
Use Bayes Theorem for condition
Frequency Tables
When summarizing a large set of data it is often useful to classify the data
into classes or categories and to determine the number of individuals
belonging to each class, called the class frequency. A tabular arrangement of
data by class
Page |1
KING FAHD UNIVERSITY OF PETROLEUM & MINERALS
DEPARTMENT OF MATHEMATICS AND STATISTICS
Term 141
STAT 211 BUSINESS STATISTICS I
Tuesday December 30, 2014
Name: _ ID #:_
Important Note:
Show all your work including formulas, intermediate steps and fi
Page |1
KING FAHD UNIVERSITY OF PETROLEUM & MINERALS
DEPARTMENT OF MATHEMATICS AND STATISTICS
Term 141
STAT 211 BUSINESS STATISTICS I
Monday November 3, 2014
Name: _ ID #:_
Important Note:
Show all your work including formulas, intermediate steps and fina
STAT 211 Term 131
1
KING FAHD UNIVERSITY OF PETROLEUM & MINERALS
DEPARTMENT OF MATHEMATICS & STATISTICS
DHAHRAN, SAUDI ARABIA
STAT 211: BUSINESS STATISTICS I
Semester 131
Major Exam Two
November 4, 2013
Allowed time 60 minutes
Please check/circle your ins
STAT212 Chapter 9 Homework
Q1: 9.2, 9.6, 9.8, 9.15
a) At 0.05 significance level, in a two-tail hypothesis test, what will you decide if Z Stat = 2.31.
Decision rule: Reject H0 if Z STAT < 1.96 or Z STAT > + 1.96.
Decision: Since ZSTAT = + 2.31 is greater
STAT212 Chapter 14 Homework
Q1: Q10 major exam 2 Term 052
A publishing company is attempting to develop a model that it can use to help predict textbook sales
for books it is considering for future publication. The marketing department has collected data
Question 1
Determine the lower- and upper-tail critical values of 2 for each of the following two-tail tests:
1) = 0.01, n = 24
2) = 0.05, n = 20
3) = 0.10, n = 16
Question 2
Marketers know that tastes differ in various regions of country. In the rental c
1
STAT 212 Business Statistics II
KING FAHD UNIVERSITY OF PETROLEUM & MINERALS
DEPARTMENT OF MATHEMATICAL SCIENCES
DHAHRAN, SAUDI ARABIA
STAT 212: BUSINESS STATISTICS II
Semester 052
Mid Term Exam No.1
Saturday March 18, 2006
6:15 7:45 pm
Please circle yo
KING FAHD UNIVERSITY OF PETROLEUM & MINERALS
DEPARTMENT OF MATHEMATICAL SCIENCES
DHAHRAN, SAUDI ARABIA
STAT 212: BUSINESS STATISTICS II
Seme
FINAL EXAM
7:30 am
Please circle your:
Instructors name
Marwan Al-Momani
Raid Anabosi
Name:
& section # (time)
1 (
Homework Chapter 13
1.
a. r = 0.6603
H 0 : 0 vs .H 1 : 0
d.f. = 8 - 2 = 6
Decision Rule:
If t Stat >2.4469 , reject H0, otherwise do not reject H0
t Stat = = 0.6603/ (1 0.66032) / (8 2) = 2.153
Since 2.153 < 2.4469 we fail to reject H0 and conclude that t
KING FAHD UNIVERSITY OF PETROLEUM & MINERALS
DEPARTMENT OF MATHEMATICS & STATISTICS
DHAHRAN, SAUDI ARABIA
STAT 212: BUSINESS STATISTICS II
Semester 132
Final Exam
Thursday, May 22, 2014
Please circle your instructors name and section number:
Section numbe
Home Work - Chapter 13
Simple Linear Regression
Question 1:
Cost accountants often estimate overhead based on the level of production. At the Standard Knitting Co.,
they have collected information on overhead expenses and units of produced at different pl
STAT 212 Business Statistics II
1
KING FAHD UNIVERSITY OF PETROLEUM & MINERALS
DEPARTMENT OF MATHEMATICAL SCIENCES
DHAHRAN, SAUDI ARABIA
STAT 212: BUSINESS STATISTICS II
Semester 133
Final Exam
Thursday August 18, 2014
7:00 pm 9:30 pm
Name:
ID#:
Part
Sect
1
STAT 212 Business Statistics II
Tables
STAT 212 Business Statistics II
2
STAT 212 Business Statistics II
3
STAT 212 Business Statistics II
4
STAT 212 Business Statistics II
5
STAT 212 Business Statistics II
6
STAT 212 Business Statistics II
7
STAT 212 B
Page 1 of 6
KING FAHD UNIVERSITY OF PETROLEUM & MINERALS
DEPARTMENT OF MATHEMATICS & STATISTICS
DHAHRAN, SAUDI ARABIA
STAT 211: BUSINESS STATISTICS I
Semester 131
Final Exam
December 31, 2013
Allowed time 120 minutes
Please check/circle your instructors n
Page |1
KING FAHD UNIVERSITY OF PETROLEUM & MINERALS
DEPARTMENT OF MATHEMATICS AND STATISTICS
Term 141
STAT 211 BUSINESS STATISTICS I
Monday December 1, 2014
Name: _ ID #:_
Important Note:
Show all your work including formulas, intermediate steps and fina
STAT 211 Term 131
1
KING FAHD UNIVERSITY OF PETROLEUM & MINERALS
DEPARTMENT OF MATHEMATICS & STATISTICS
DHAHRAN, SAUDI ARABIA
STAT 211: BUSINESS STATISTICS I
Semester 131
Major Exam Three
November 28, 2013
Allowed time 60 minutes
Please check/circle your
HomeWorkQuestions(ChapterOne)
Q1:
Defineeachofthefollowingstatisticalterms:
a. Descriptivestatistics
b. Statisticalinference
c. Population
d. Sample
Q2:
Amanufacturerofchildrentoysclaimsthatlessthan5%ofhisproductsaredefective.When500
toysweredrawnfromalar
There are typically four levels of measurement that are defined:
Nominal
Ordinal
Interval
Ratio
In nominal measurement the numerical values just "name" the
attribute uniquely. No ordering of the cases is implied. For
example, jersey numbers in basketball
HomeWorkQuestions(ChapterThree)
Q1 Below is the five-number summary of salaries (in $) for a sample of U.S. marketing
managers displayed in question 1.
Min
4636
0
Q1
Median
69693
77020
Q3
Max
91750 129420
1. Would you expect the mean salary for this sampl
HomeWorkQuestions(ChapterTwo)
Q1:Fillinthemissingcomponentsofthefollowingfrequencydistributionconstructedforasamplesize
of50:
Class
Frequency
7.85lessthan
lessthan8.05
8.05lessthan
lessthan8.25
8.25lessthan
Relative
frequency
Cumulative
relative
frequency
1
Chapter Ten
Estimation for Two Population Parameters
Chspter Goals:
After completing this chapter, you should be able to:
Form interval estimates for
two independent population means
Standard deviations known
Standard deviations unknown
two means fr
Chapter One
Introduction and Data Collection
Chapter Goals:
After completing this chapter, you should be able to:
How Statistics is used in business.
The sources of data used in business.
The types of data used in business
Describe key data collection
Chapter Two
Presenting Data in Tables & Charts
Chapter Goals:
After completing this chapter, you should be able to:
Develop tables and charts for categorical data.
Create and interpret bar chart, pie chart.
Develop tables and charts for numerical data.
1
Chapter Three
Numerical Descriptive Measures
Chapter Goals:
After completing this chapter, you should be able to:
To describe the properties of central tendency, the variation , and the shape in
numerical data.
To calculate descriptive summary measure
1
Chapter 5
Some Important Discrete Probability Distributions
Chapter Goals:
After completing this chapter, you should be able to:
The properties of a probability distribution
To compute and interpret the expected value and the variance of a discrete
ra
1
Chapter Eight
Estimating Single population Parameters
Goals of chapter:
After completing this chapter, you should be able to:
Distinguish between a point estimate and a confidence interval estimate
Construct and interpret a confidence interval estimat
1
Chapter Six
Introduction to Continuous Probability Distributions
Chapter Goals:
After completing this chapter, you should be able to
To compute probabilities from the Continuous Probability Distributions
To compute probabilities from the normal distri
1
Chapter Seven
Sampling Distributions
Chapter Goals:
After completing this chapter, you should be able to:
To distinguish between different sampling methods
The concept of the sampling distribution
Determine the mean and standard deviation for the sam