QM2241
TAKE HOME QUIZ FOR CHAPTER 5
NAME:_
1
Which of the following is a correct statement about a probability?
Probability values range from 0 to 1, inclusive.
A)
Probabilities may assume negative values.
B)
Probabilities may be greater than 1.
C)
Probab
Ch.1 What is Statistics?
Statistics
o Descriptive
o Inferential
Population vs. sample
Variables
o Qualitative
o Quantitative
Discrete
Continuous
Levels of Measurement
o Nominal
o Ordinal
o Interval
o Ratio
Ch.2 Describing Data: Frequency Tables, Fre
DATE
Wednesday
DAILY ASSIGNMENTS
Course Introduction,
Chapter 1
Do practice homework assignment in Connect and
LearnSmart (LS 1)
Chapters 1-2
LS 2 start homework & work recommended problems
Thursday
Chapters 2-3
LS 3a, start homework & work recommended pr
Given a distribution of grouped scores, if an interval
is shown as 28, the interval is 6 units wide False
For the frequency distribution shown in the following
table,
= 25.
Score (X)
7
6
5
4
3
False
f
1
3
3
2
1
All frequency distributions should be of gro
The dependent variable is the variable that is
systematically manipulated. False
If one measured the height of all the women at a
university and took an average of the data, the
university women would be a sample of the
population of all university women
A history professor gives a quiz to his class and
records the following scores:
13, 11, 11, 9, 12, 13, 16, 14, 11, 10, 8, 13, 20.
The standard deviation for this distribution is
_. Assume sample scores. 3.12
The mean weight for team A with 15 members is 1
A researcher has collected some data on the amount
of time in seconds (to the nearest 0.1 second) that it
took trained rats to run through a maze. The data is
shown below arranged in a frequency distribution of
grouped scores.
The cumulative frequency for
Find the sum of squares (SS) for the following: 48, 96, 13, 16, 35,
81, 81, and 92. 8075.5
If two people are randomly selected (with replacement) form a
class containing 16 psychology students and 13 nursing students,
what is the probability of selecting
A set of raw scores has a rectangular shape. The z
transformed scores for this set of raw scores has a
_ shape. Rectangular
Statistical methods that use sample data to make
statements about populations are called inferential
statistics. True
The binomial
In inferential statistics the object is usually to
generalize from a _ to a _. sample;
population
Let's assume you are conducting an experiment to
determine the effect of a new drug on the incidence
of epileptic seizures. You select 20 epileptics from
the
The dependent variable is the variable that is
systematically manipulated. False
If one measured the height of all the women at a
university and took an average of the data, the
university women would be a sample of the
population of all university women
1.
A United Nations report shows the mean family income for Mexican migrants to the United States is $27,150 per year. A FLOC (Farm Labor Organizing Committee) evaluation of 30 Mexican family units reveals a mean to be $29,500 with a sample standard devia
Week 7 1. Warren County Telephone Company claims in its annual report that the typical customer spends $60 per month on local and long distance service. A sample of 12 subscribers revealed the following amounts spent last month. $63 $65 $64 $67 $56 $64 $6
Week 6 1. Listed below are the 35 members of the Metro Toledo Automobile Dealers Association. We would like to estimate the mean revenue from dealer service departments.
(a) We want to select a random sample of five dealers. The random numbers are: 65, 4,
1.
A recent report in BusinessWeek indicated that 32 percent of all employees steal from their company each year. (Round z-score computation to 2 decimal places and your final answers to 4 decimal places.) If a company employs 50 people, what is the proba
1.
A survey of 39 students at the Wall College of Business showed the following majors: Accounting Finance Economics Managemen t Marketing 9 5 5 9 11
Suppose you select a student and observe his or her major. (a) What is the probability he or she is a man