Chapter 9 Quiz
Question 1 (1 point)
This is a correct statement of a statistical hypothesis: H0: = 100
Question 1 options:
A) False
B) True
Save
Question 2 (1 point)
A type I error occurs if the null
. Caper 4 Cassampls
Section 4.6
(we Aggiime than Z has a standard Henna] dixtt‘ibuiion.
USE: Appendix Tﬂbfﬁ ill :0 Lietermine the. value for .3 that wives
sash of the feliowjng:
{a} P —23 "~11 Z41
Chapter 4 Class Examples
Section 4.2
Section 4.3
Chapter 4 Class Examples
Determine the probability density function for the following cumulative distribution function.
Problem 4-30
Section 4.4
Sectio
Chapter 3 Class Examples
Section 3.1
For each of the following exercises, determine the range (possible values) of the random
variable.
Section 3.2
Chapter 3 Class Examples
Section 3.3
Section 3.4
Sec
Simpsons Paradox
Solution:
The overall success rate depends on the success rates for each stone size group, but also the probability
of the groups. It is the weighted average of the group success rate
Chapter 6 Class Examples
Section 6.1
n
sample mean x
x
i 1
n
i
748.0
83.11 drag counts
9
2
n
xi
n
i 1
748.02
2
x
62572
i
n
9
sample variance s 2 i 1
n 1
9 1
404.89
50.61 drag counts 2
8
samp
Chapter 11 Class Examples
SECTION 11.2
Part a. Using excel, data analysis, regression; estimate of 2 = 8.767753
b. y-hat = 13.32018 + 3.324371(7.50) = 38.253
c. y-hat = 13.32018 + 3.324371(5.8980) = 3
Chapter 7 Class Examples
SECTION 7.2
Excel: Use NORM.DIST. You must calculate the std dev for sample = 3.5/6 = 1.429
This is P(X < 75.75); we want P(X > 75.75) so subtract from 1:
P(X > 75.75) = 1 P(X
Class Examples: Chapter 8, sections 1 to 3
NOTE: THE DATASETS FOR SOME PROBLEMS CAN BE FOUND IN THE DATASETS MODULE IN MyCourses
or ON THIS WEBSITE: www.wiley.com/college/montgomery
SECTION 8.1
a. the
Chapter 5 Homework Solutions
Section 5.1
5-1.
First, f(x,y) 0. Let R denote the range of (X,Y)
Then,
f ( x, y) 14 18 14 14 18 1
R
a) P(X < 2.5, Y < 3) = f(1.5,2) + f(1,1) = 1/8 + 1/4=3/8
b) P(X < 2.5)
Chapter 13 Quiz
Question 1 (1 point)
The analysis of variance (ANOVA) can be used for comparing the equality of more than two treatment
means.
Question 1 options:
A) True
B) False
Save
Question 2 (1 p
Stats for Engineers QUIZ Chapter 2
Chapter 2 Quiz
Question 1 (1 point)
An experiment that can be repeated many times under identical conditions yet have different outcomes is
called a random experimen
Chapter 11 Quiz
Question 1 (1 point)
A scatter diagram is a convenient way to display graphically the relationship between two quantitative
variables.
Question 1 options:
A) True
B) False
Save
Questio
Chapter 4 Quiz
Question 1 (1 point)
The probability density function of a continuous random variable is a simple
description of the probabilities associated with the random variable.
Question 1 option
Chapter 1 Quiz
Question 1 (1 point)
Statistical reasoning is also called statistical inference.
Question 1 options:
A) True
B) False
Save
Question 2 (1 point)
A time series plot shows the data values
CHAPTER 8
1.
The statistical interval that contains a stated proportion of the values of a probability
distribution is called a confidence interval.
A) False
B) True
2.
In a 95% confidence interval th
Quiz
Note: It is recommended that you save your response as you complete each question.
Chapter 3 Quiz
Question 1 (1 point)
Discrete random variables take on values across a continuum.
Question 1 opti
Chapter 5 Quiz
Question 1 (1 point)
A conditional probability distribution does not depend on the values of any other random
variables.
Question 1 options:
A) True
B) False
Question 2 (1 point)
A marg
Chapter 6 quiz
Question 1 (1 point)
The sample mean is analogous to the center of mass in mechanics.
Question 1 options:
A) True
B) False
Save
Question 2 (1 point)
The mode of a sample is the most fre
Class Examples: Chapter 9
SECTION 9.1
a. correctly stated
b. not correct; the inequality is in H0; equality in HA
c. no, symbols used are statistics, not population parameters
d. no, the same value mu