STATISTICS F/BUSINESS+ECONOMICS-TEXT
13th Edition
ISBN: 9781305881884
Author: Anderson
Publisher: CENGAGE L
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Chapter 13, Problem 38SE
To determine
Check whether the mean number of parts produced is the same with each method at
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#1) Use these data and test to see whether the mean number of parts produced is the same with each method. Use ? = 0.05.
State the null and alternative hypotheses:
A) H0: Not all the population means are equal.Ha: ?A = ?B = ?C
B) H0: ?A = ?B = ?CHa: ?A ≠ ?B ≠ ?C
C) H0: At least two of the population means are equal.Ha: At least two of the population means are different.
D) H0: ?A = ?B = ?CHa: Not all the population means are equal.
E) H0: ?A ≠ ?B ≠ ?CHa: ?A = ?B = ?C
#2) Find the…
In an agricultural experiment, the effects of two fertilizers on the production of oranges were measured. Fourteen randomly selected plots of land were treated with fertilizer A, and 10 randomly selected plots were treated with fertilizer B. The number of pounds of harvested fruit was measured from each plot. Following are the results.
Fertilizer A
473 507 526 479 477 468 516 467 519 523 483 540 518 488Fertilizer B
455 501 470 420 483 419 468 476 459 513Assume that the populations are approximately normal. Construct a 95% confidence interval for the difference between the mean yields for the two types of fertilizer. Interpret the results.
In a base-rate neglect experiment, subjects are randomly divided into two groups, namely A and B.
Subjects in Group A are told that Max has been randomly drawn from a population of 95% nurses and 5% doctors.
Subjects in Group B are told that Max has been randomly drawn from a population of 5% nurses and 95% doctors.
All subjects from both groups are provided with the following description about Max: Max lives in a beautiful house and drives an expensive car; he invests a lot of time in his career.
All subjects from both groups are told that the probability that Max fits the description given that he is a doctor is 80%, and the probability that Max fits the description given that he is a nurse is 20%.
All subjects from both groups are then asked to estimate the probability that Max is a doctor given that he fits the description.
1. Suppose subjects in Group A correctly use the probability theory. What should be their estimate?
From this please explain why this experiment can test…
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...
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