STATISTICS F/BUSINESS+ECONOMICS-TEXT
13th Edition
ISBN: 9781305881884
Author: Anderson
Publisher: CENGAGE L
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 13.2, Problem 11E
Four different paints are advertised as having the same drying time. To check the manufacturer’s claims. five samples were tested for each of the paints. The time in minutes until the paint was dry enough for a second coat to be applied was recorded. The following data were obtained.
| Paint 1 | Paint 2 | Paint 3 | Paint 4 |
| 128 | 144 | 133 | 150 |
| 137 | 133 | 143 | 142 |
| 135 | 142 | 137 | 135 |
| 124 | 146 | 136 | 140 |
| 141 | 130 | 131 | 153 |
At the α = .05 level of significance, test to see whether the
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
The following data are from an experiment on carnations. The explanatory variable is the amount of inorganic bromine (micrograms per milliliter) in a plot of standard size. The
response variable is the average number of flowers per carnation plant for the 30 plants grown in the plot. Find the change in number of flowers per plant given an increase in 1 µg per
mL of inorganic bromine.
Amount of
bromine
Average no. of
flowers
Select one:
O a. -0.216
O b. 0.216
O c.
O d. -3.81
4.04
3
3.2
4
2.9
6
3.7
7
2.2
8
1.8
10
2.3
12
1.7
15
16
0.8 0.3
A large manufacturing company producing air conditioner compressor believes the number
of units of air conditioner sold is related to atmospheric temperature. An R&D officer
conducted a study and gathered the following data:
3.
Day
Sale
Temperature
(Fahrenheit)
63
(in thousands)
1.52
1
2
70
1.68
3
73
1.8
4
75
2.05
80
2.36
6.
82
2.25
7
85
2.68
8
88
2.9
9.
90
3.14
3.06
3.24
10
91
11
92
12
75
1.92
13
98
3.4
14
100
3.28
Construct an estimated regression line between temperature and number of units
sold.
а)
b)
Does the model in part (a) confirm that contribution of temperature to number of
units of air conditioner sold? Test using a 0.05.
Find the coefficient of correlation. What does the value imply about the relationship
of the two variables?
c)
If the temperature soared to 120 Fahrenheit, can you predict the number of units of
air conditioner sold? Explain
d)
Four laboratories are being used to perform chemical analyses. Samples of the same are sent to the laboratories for analysis as
part of the study to determine whether or not they give, on the average, the same results. The analytical results for the 4
laboratories are as follows: use alpha = 0.01
...
A
B
D
58
62
55
60
61
64
54
60
60
63
56
60
58
57
53
61
58
60
58
62
ANOVA TABLE: Fill in the missing values. (round off to two decimal places, ######)
Source of
Sum of Squares
df
Mean Square
Computed f
f-Critical
Variation
Between Groups
109.2
3
36.4
10.25
5.29
Within Groups
56.8
16
3.55
Total
166
19
Choose below the appropriate decision Blank 11
a The four laboratories give the same result
b The four laboratories are not producing the same results.
c Labs A and Bare giving the same results.
d none of the above
Chapter 13 Solutions
STATISTICS F/BUSINESS+ECONOMICS-TEXT
Ch. 13.2 - The following data are from a completely...Ch. 13.2 - In a completely randomized design, seven...Ch. 13.2 - Refer to exercise 2. a. what hypotheses are...Ch. 13.2 - In an experiment designed to test the output...Ch. 13.2 - In a completely randomized design, 12 experimental...Ch. 13.2 - Develop the analysis of variance computations for...Ch. 13.2 - Three different methods for assembling a product...Ch. 13.2 - Refer to the NCP data in Table 13.4. Set up the...Ch. 13.2 - To study the effect of temperature on yield in a...Ch. 13.2 - Auditors must make judgments about various aspects...
Ch. 13.2 - Four different paints are advertised as having the...Ch. 13.2 - The Consumer Reports Restaurant Customer...Ch. 13.3 - The following data arc from a completely...Ch. 13.3 - The following data are from a completely...Ch. 13.3 - To test whether the mean time needed to mix a...Ch. 13.3 - Refer to exercise 15. Use Fishers LSD procedure to...Ch. 13.3 - The following data are from an experiment designed...Ch. 13.3 - To lest for any significant difference in the...Ch. 13.3 - Refer to exercise 18. Use the Bonferroni...Ch. 13.3 - The International League of Triple-A minor league...Ch. 13.4 - Consider the experimental results for the...Ch. 13.4 - The following data were obtained for a randomized...Ch. 13.4 - An experiment has been conducted for four...Ch. 13.4 - An automobile dealer conducted a test to determine...Ch. 13.4 - The price drivers pay for gasoline often varies a...Ch. 13.4 - The Scholastic Aptitude Test (SAT) contains three...Ch. 13.4 - A study reported in the Journal of the American...Ch. 13.5 - A factorial experiment involving two levels of...Ch. 13.5 - The calculations for a factorial experiment...Ch. 13.5 - A mail-order catalog firm designed a factorial...Ch. 13.5 - An amusement park studied methods for decreasing...Ch. 13.5 - As part of a study designed to compare hybrid and...Ch. 13.5 - A study reported in The Accounting Review examined...Ch. 13 - In a completely randomized experimental design,...Ch. 13 - A study reported in the Journal of Small Business...Ch. 13 - The U.S. Environmental Protection Agency (EPA)...Ch. 13 - The following data show the percentage of 17- to...Ch. 13 - Prob. 38SECh. 13 - In a study conducted to investigate browsing...Ch. 13 - A research firm tests the miles-per-gallon...Ch. 13 - The compact car market in the United States is...Ch. 13 - Prob. 42SECh. 13 - A factorial experiment was designed to test for...Ch. 13 - A manufacturing company designed a factorial...Ch. 13 - Wentworth Medical Center As part of a long-term...Ch. 13 - Compensation for Sales Professionals Suppose that...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Similar questions
- When exposed to an infection, a person typically develops antibodies. The extent to which theantibodies respond can be measured by looking at a persons titer, which is a measure of the number of antibodies present. The higher the titer is, the more antibodies that are present. The data in Table represent the titers of 11 ill people and 11 healthy people exposed to the tularemia virus in Vermont. Is the level of titer in the ill group greater than the level of titer in the healthy group? Use the α = 0.10 level of significance.arrow_forwardA new vaccination is being used in a laboratory experiment to investigate whether it is effective. There are 277277 subjects in the study. Is there sufficient evidence to determine if vaccination and disease status are related? Vaccination Status Diseased Not Diseased Total Vaccinated 7474 3030 104104 Not Vaccinated 5151 122122 173173 Total 125125 152152 277277 Copy Data Step 5 of 8 : Find the degrees of freedom associated with the test statistic for this problem.arrow_forward
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill
Glencoe Algebra 1, Student Edition, 9780079039897...
Algebra
ISBN:9780079039897
Author:Carter
Publisher:McGraw Hill
Sampling Methods and Bias with Surveys: Crash Course Statistics #10; Author: CrashCourse;https://www.youtube.com/watch?v=Rf-fIpB4D50;License: Standard YouTube License, CC-BY
Statistics: Sampling Methods; Author: Mathispower4u;https://www.youtube.com/watch?v=s6ApdTvgvOs;License: Standard YouTube License, CC-BY