Elementary Statistics: A Step By Step Approach
10th Edition
ISBN: 9781259755330
Author: Allan G. Bluman
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 12, Problem 8CQ
To determine
To identify: Which test is used if the null hypothesis is rejected in ANOVA, where the difference in the means is found.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A client of a commercial rose grower has been keeping records on the shelf-life of a rose. The client sent the following frequency distribution to the grower.
Rose Shelf-Life
Days of Shelf-Life Frequency fi
1-5
2
6-10
4
11-15
7
16-20
6
21-25
26-30
5
2
Step 2 of 2: Calculate the population standard deviation for the shelf-life. Round your answer to two decimal places, if necessary.
A market research firm used a sample of individuals to rate the purchase potential of a particular product before and after the individuals saw a new television commercial about the product. The purchase potential ratings were based on a 0 to 10 scale, with higher values indicating a higher purchase potential. The null hypothesis stated that the mean rating "after" would be less than or equal to the mean rating "before." Rejection of this hypothesis would show that the commercial improved the mean purchase potential rating. Use = .05 and the following data to test the hypothesis and comment on the value of the commercial.
Purchase Rating
Purchase Rating
Individual
After
Before
Individual
After
Before
1
6
5
5
3
5
2
6
4
6
9
8
3
7
7
7
7
5
4
4
3
8
6
6
What are the hypotheses?H0: d Ha: d
Compute (to 3 decimals).Compute sd (to 1 decimal).
What is the p-value?The p-value is
What is your decision?
Why would you use a histograph or bar graph? Which would be better and why for the data shown.
Chapter 12 Solutions
Elementary Statistics: A Step By Step Approach
Ch. 12.1 - Colors That Make You Smarter The following set of...Ch. 12.1 - What test is used to compare three or more means?Ch. 12.1 - State three reasons why multiple t tests cannot be...Ch. 12.1 - What are the assumptions for ANOVA?Ch. 12.1 - Define between-group variance and within-group...Ch. 12.1 - State the hypotheses used in the ANOVA test.Ch. 12.1 - When there is no significant difference among...Ch. 12.1 - For Exercises 7 through 20, assume that all...Ch. 12.1 - For Exercises 7 through 20, assume that all...Ch. 12.1 - For Exercises 7 through 20, assume that all...
Ch. 12.1 - For Exercises 7 through 20, assume that all...Ch. 12.1 - Prob. 11ECh. 12.1 - For Exercises 7 through 20, assume that all...Ch. 12.1 - For Exercises 7 through 20, assume that all...Ch. 12.1 - For Exercises 7 through 20, assume that all...Ch. 12.1 - Prob. 15ECh. 12.1 - For Exercises 7 through 20, assume that all...Ch. 12.1 - For Exercises 7 through 20, assume that all...Ch. 12.1 - For Exercises 7 through 20, assume that all...Ch. 12.1 - For Exercises 7 through 20, assume that all...Ch. 12.1 - For Exercises 7 through 20, assume that all...Ch. 12.2 - Colors That Make You Smarter The following set of...Ch. 12.2 - What two tests can be used to compare two means...Ch. 12.2 - Explain the difference between the two tests used...Ch. 12.2 - For Exercises 3 through 8, the null hypothesis was...Ch. 12.2 - For Exercises 3 through 8, the null hypothesis was...Ch. 12.2 - For Exercises 3 through 8, the null hypothesis was...Ch. 12.2 - For Exercises 3 through 8, the null hypothesis was...Ch. 12.2 - For Exercises 3 through 8, the null hypothesis was...Ch. 12.2 - For Exercises 3 through 8, the null hypothesis was...Ch. 12.2 - For Exercises 9 through 13, do a complete one-way...Ch. 12.2 - Prob. 10ECh. 12.2 - For Exercises 9 through 13, do a complete one-way...Ch. 12.2 - For Exercises 9 through 13, do a complete one-way...Ch. 12.2 - Prob. 13ECh. 12.2 - Prob. 14ECh. 12.3 - Automobile Sales Techniques The following outputs...Ch. 12.3 - Prob. 1ECh. 12.3 - Explain what is meant by main effects and...Ch. 12.3 - Prob. 3ECh. 12.3 - How are the F test values computed?Ch. 12.3 - Prob. 5ECh. 12.3 - In a two-way ANOVA, variable A has six levels and...Ch. 12.3 - Prob. 7ECh. 12.3 - When can the main effects for the two-way ANOVA be...Ch. 12.3 - Prob. 9ECh. 12.3 - For Exercises 9 through 15, perform these steps....Ch. 12.3 - For Exercises 9 through 15, perform these steps....Ch. 12.3 - For Exercises 9 through 15, perform these steps....Ch. 12.3 - Prob. 13ECh. 12.3 - For Exercises 9 through 15, perform these steps....Ch. 12.3 - Prob. 15ECh. 12 - If the null hypothesis is rejected in Exercises 1...Ch. 12 - Prob. 12.1.2RECh. 12 - Prob. 12.1.3RECh. 12 - Prob. 12.1.4RECh. 12 - Prob. 12.1.5RECh. 12 - If the null hypothesis is rejected in Exercises 1...Ch. 12 - Prob. 12.1.7RECh. 12 - Prob. 12.1.8RECh. 12 - Review Preparation for Statistics A statistics...Ch. 12 - Effects of Different Types of Diets A medical...Ch. 12 - Prob. 1DACh. 12 - Prob. 2DACh. 12 - Prob. 3DACh. 12 - Prob. 1CQCh. 12 - Prob. 2CQCh. 12 - Prob. 3CQCh. 12 - Determine whether each statement is true or false....Ch. 12 - Prob. 5CQCh. 12 - Prob. 6CQCh. 12 - Prob. 7CQCh. 12 - Prob. 8CQCh. 12 - Complete the following statements with the best...Ch. 12 - Prob. 10CQCh. 12 - For Exercises 11 through 17, use the traditional...Ch. 12 - Prob. 12CQCh. 12 - Prob. 13CQCh. 12 - Prob. 14CQCh. 12 - Prob. 15CQCh. 12 - Prob. 16CQCh. 12 - For Exercises 11 through 17, use the traditional...Ch. 12 - Shown here are the abstract and two tables from a...Ch. 12 - Shown here are the abstract and two tables from a...Ch. 12 - Prob. 3CTCCh. 12 - Prob. 4CTCCh. 12 - Prob. 5CTCCh. 12 - Prob. 6CTCCh. 12 - Prob. 7CTCCh. 12 - Adult Children of Alcoholics Shown here are the...Ch. 12 - Prob. 9CTCCh. 12 - Prob. 10CTCCh. 12 - Prob. 11CTC
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
- Please help me with this question on statisticsarrow_forwardPlease help me with this statistics questionarrow_forwardPlease help me with the following statistics questionFor question (e), the options are:Assuming that the null hypothesis is (false/true), the probability of (other populations of 150/other samples of 150/equal to/more data/greater than) will result in (stronger evidence against the null hypothesis than the current data/stronger evidence in support of the null hypothesis than the current data/rejecting the null hypothesis/failing to reject the null hypothesis) is __.arrow_forward
- Please help me with the following question on statisticsFor question (e), the drop down options are: (From this data/The census/From this population of data), one can infer that the mean/average octane rating is (less than/equal to/greater than) __. (use one decimal in your answer).arrow_forwardHelp me on the following question on statisticsarrow_forward3. [15] The joint PDF of RVS X and Y is given by fx.x(x,y) = { x) = { c(x + { c(x+y³), 0, 0≤x≤ 1,0≤ y ≤1 otherwise where c is a constant. (a) Find the value of c. (b) Find P(0 ≤ X ≤,arrow_forwardNeed help pleasearrow_forward7. [10] Suppose that Xi, i = 1,..., 5, are independent normal random variables, where X1, X2 and X3 have the same distribution N(1, 2) and X4 and X5 have the same distribution N(-1, 1). Let (a) Find V(X5 - X3). 1 = √(x1 + x2) — — (Xx3 + x4 + X5). (b) Find the distribution of Y. (c) Find Cov(X2 - X1, Y). -arrow_forward1. [10] Suppose that X ~N(-2, 4). Let Y = 3X-1. (a) Find the distribution of Y. Show your work. (b) Find P(-8< Y < 15) by using the CDF, (2), of the standard normal distribu- tion. (c) Find the 0.05th right-tail percentage point (i.e., the 0.95th quantile) of the distri- bution of Y.arrow_forward6. [10] Let X, Y and Z be random variables. Suppose that E(X) = E(Y) = 1, E(Z) = 2, V(X) = 1, V(Y) = V(Z) = 4, Cov(X,Y) = -1, Cov(X, Z) = 0.5, and Cov(Y, Z) = -2. 2 (a) Find V(XY+2Z). (b) Find Cov(-x+2Y+Z, -Y-2Z).arrow_forward1. [10] Suppose that X ~N(-2, 4). Let Y = 3X-1. (a) Find the distribution of Y. Show your work. (b) Find P(-8< Y < 15) by using the CDF, (2), of the standard normal distribu- tion. (c) Find the 0.05th right-tail percentage point (i.e., the 0.95th quantile) of the distri- bution of Y.arrow_forward== 4. [10] Let X be a RV. Suppose that E[X(X-1)] = 3 and E(X) = 2. (a) Find E[(4-2X)²]. (b) Find V(-3x+1).arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
Recommended textbooks for you
Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:Cengage
College Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage Learning
Holt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGAL
Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill
Big Ideas Math A Bridge To Success Algebra 1: Stu...AlgebraISBN:9781680331141Author:HOUGHTON MIFFLIN HARCOURTPublisher:Houghton Mifflin Harcourt
Algebra & Trigonometry with Analytic Geometry
Algebra
ISBN:9781133382119
Author:Swokowski
Publisher:Cengage
College Algebra (MindTap Course List)
Algebra
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:Cengage Learning
Holt Mcdougal Larson Pre-algebra: Student Edition...
Algebra
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Glencoe Algebra 1, Student Edition, 9780079039897...
Algebra
ISBN:9780079039897
Author:Carter
Publisher:McGraw Hill
Big Ideas Math A Bridge To Success Algebra 1: Stu...
Algebra
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:Houghton Mifflin Harcourt
Bayes' Theorem 1: Introduction and conditional probability; Author: Dr Nic's Maths and Stats;https://www.youtube.com/watch?v=lQVkXfJ-rpU;License: Standard YouTube License, CC-BY
What is Conditional Probability | Bayes Theorem | Conditional Probability Examples & Problems; Author: ACADGILD;https://www.youtube.com/watch?v=MxOny_1y2Q4;License: Standard YouTube License, CC-BY
Bayes' Theorem of Probability With Tree Diagrams & Venn Diagrams; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=OByl4RJxnKA;License: Standard YouTube License, CC-BY
Bayes' Theorem - The Simplest Case; Author: Dr. Trefor Bazett;https://www.youtube.com/watch?v=XQoLVl31ZfQ;License: Standard Youtube License