Bundle: Essentials of Statistics for The Behavioral Sciences, Loose-Leaf Version, 9th + Aplia, 1 term Printed Access Card
9th Edition
ISBN: 9781337593830
Author: Frederick J Gravetter, Larry B. Wallnau, Lori-Ann B. Forzano
Publisher: Cengage Learning
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Chapter 1, Problem 8P
Describe the data for a
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Selon une économiste d’une société financière, les dépenses moyennes pour « meubles et appareils de maison » ont été moins importantes pour les ménages de la région de Montréal, que celles de la région de Québec.
Un échantillon aléatoire de 14 ménages pour la région de Montréal et de 16 ménages pour la région Québec est tiré et donne les données suivantes, en ce qui a trait aux dépenses pour ce secteur d’activité économique.
On suppose que les données de chaque population sont distribuées selon une loi normale.
Nous sommes intéressé à connaitre si les variances des populations sont égales.a) Faites le test d’hypothèse sur deux variances approprié au seuil de signification de 1 %. Inclure les informations suivantes :
i. Hypothèse / Identification des populationsii. Valeur(s) critique(s) de Fiii. Règle de décisioniv. Valeur du rapport Fv. Décision et conclusion
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According to an economist from a financial company, the average expenditures on "furniture and household appliances" have been lower for households in the Montreal area than those in the Quebec region.
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It is assumed that the data from each population are distributed normally.
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A major company in the Montreal area, offering a range of engineering services from project preparation to construction execution, and industrial project management, wants to ensure that the individuals who are responsible for project cost estimation and bid preparation demonstrate a certain uniformity in their estimates. The head of civil engineering and municipal services decided to structure an experimental plan to detect if there could be significant differences in project evaluation.
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Chapter 1 Solutions
Bundle: Essentials of Statistics for The Behavioral Sciences, Loose-Leaf Version, 9th + Aplia, 1 term Printed Access Card
Ch. 1.1 - A researcher is interested in the fast-food eating...Ch. 1.1 - A researcher is curious about the average distance...Ch. 1.1 - What term is used for the statistical techniques...Ch. 1.1 - The SAT is standardized so that the average score...Ch. 1.2 - Prob. 1LCCh. 1.2 - A researcher studies the factors that determine...Ch. 1.2 - When measuring height to the nearest half inch,...Ch. 1.2 - Ranking a group of cities in terms of "quality of...Ch. 1.3 - In a correlational study, how many variables are...Ch. 1.3 - A research study comparing alcohol use for college...
Ch. 1.3 - A recent study reports that infant rats fed a diet...Ch. 1.4 - What value is represented by the uppercase letter...Ch. 1.4 - What is the value of (X + 1) for the following...Ch. 1.4 - What is the last step in the calculation of (X)2?...Ch. 1 - A researcher is interested in the texting habits...Ch. 1 - Define the terms population and sample, and...Ch. 1 - Statistical methods arc classified into two major...Ch. 1 - Define the terms statistic and parameter and...Ch. 1 - Explain why honesty is a hypothetical construct...Ch. 1 - A lax form asks people to identify their age....Ch. 1 - Four scales of measurement were introduced in this...Ch. 1 - Describe the data for a correlation research study...Ch. 1 - Describe how the goal of an experimental research...Ch. 1 - The results of a recent study showed that children...Ch. 1 - Gentile, Lynch, Linder, and Walsh (2004) surveyed...Ch. 1 - A research study comparing alcohol use for college...Ch. 1 - Stephens, Atkins, and Kingston (2009) conducted an...Ch. 1 - Ackerman and Goldsmith (2011) compared learning...Ch. 1 - There is some evidence that people with a visible...Ch. 1 - Guguen and Jacob (2012) asked waitresses to wear...Ch. 1 - Ford and Torok (2008) found that motivational...Ch. 1 - For the following scores, find the value of each...Ch. 1 - For the following set of scores, find the value of...Ch. 1 - For the following set of scores, find the value of...Ch. 1 - Two scores, X and Y, are recorded for each of n =...Ch. 1 - Use summation notation lo express each of the...Ch. 1 - For the following set of stores, find the value of...
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