Module 6 Quiz
State the null hypothesis.
_ 1.
A local retailer currently schedules employees based on the assumption that they serve customers
uniformly throughout the week (the same number each day). Management is starting to question
this assumption and
Module 3 Quiz
Select the most appropriate response.
_ 1.
a)
b)
c)
d)
What is the term for the number of standard deviations an observation falls from the mean?
z score
discrete value
continuous value
y value
Select the most appropriate response.
_ 2.
a)
b
Directions: Read Module 1 Summary Notes regarding Chapters 1 and 2.
This document can be used as a reference tool as you prepare for the module quiz and exam.
Chapter 1 - Introduction to Statistics
Section 1.1 An Overview of Statistics
What is Data?
Data
5.1 Introduction to Normal Distributions and the Standard Normal Distribution
Characteristics of continuous Random variables are:
The outcomes are measured, not counted.
Geometrically, the probability of an outcome is equal to the area under a density cur
3.1 Basic Concepts of Probability and Counting
Definitions
Probability experiment: An action, or trial, through which specific results (counts,
measurements, or responses) are obtained.
Outcome: The result of a single trial in a probability experiment.
Sa
Module 5 Quiz
Determine whether the samples are independent or dependent.
_ 1.
Sample 1: The scores of 10 students who took the ACT
Sample 2: The scores of 10 different students who took the SAT
a)
independent
b)
dependent
Determine whether the samples ar
In Section 5.2, we are only going to consider one part of it and it is called
"Expected Value". This is another way of saying the mean of the probability
distribution.
First, recall, that the mean of a set of data or a distribution is often expressed as
Discrete variables: have a finite number of possible values or an infinite number of values that can be
counted as in numbering them 1, 2, 3, etc
Discrete Probability Distribution consists of the values a random variable can assume and the
corresponding
Statistics: Module 4 Quiz
Question 1
0 / 1 point
Assume that a simple random sample has been selected from a normally distributed population.
Find the test statistic t.
In a local newspaper, it is reported that for the adult population of one town, the me
6 Quiz Questions
tion 1
1 / 1 point
State the null hypothesis.
A local retailer currently schedules employees based on the assumption that they serve customers
uniformly throughout the week (the same number each day). Management is starting to question th
Module 1 Quiz
Question 1
1 / 1 point
Select the most appropriate response.
Which branch of statistics deals with the organization and summarization of collected information?
descriptive
inferential
Question
2
1/1
point
Identify whether the statement descr
Module 3 Quiz
Find the indicated probability.
An airline knows from experience that the distribution of the number of suitcases that get lost each week
on a certain route is approximately normal with = 15.5 and = 3.6. What is the probability that during a
Module 5 Ch 8-9
Question 1
0 / 1 point
Identify the least squares regression line.
Consider the following scatter plot:
Which of the following provides the most reasonable approximation to the least squares regression line?
Question
2
0/1
point
Use the sc
Module 2 Quiz
Question 1
1 / 1 point
Select the most appropriate response.
Two events are dependent if when one occurs:
The probability of the other occurring is unchanged.
The other event will always occur.
The other will never occur.
The probability of