Practice_Questions_for_Exam_3

# Practice_Questions_for_Exam_3 - GB303 Fall 2010 Practice...

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Unformatted text preview: GB303 Fall 2010 Practice Question for Exam #3 1. True or False: When you reject the Ho hypothesis in a one-way ANOVA , you can conclude that there is significant treatment effect. A) True. B) False. 2. Which of the following components in an ANOVA table are not additive? A) Sum of squares. B) Degrees of freedom. C) Mean squares. D) It is not possible to tell. 3. In a one-way ANOVA, if the computed F statistic exceeds the critical F value we may A) reject H since there is evidence all the means differ. B) reject H since there is evidence of a treatment effect. C) not reject H since there is no evidence of a difference. D) not reject H because a mistake has been made. 4. An airline wants to select a computer software package for its reservation system. Four software packages (1, 2, 3, and 4) are commercially available. The airline will choose the package that bumps as few passengers, on the average, as possible during a month. An experiment is set up in which each package is used to make reservations for 5 randomly selected weeks. (A total of 20 weeks was included in the experiment.) The number of passengers bumped each week is given below. How should the data be analyzed? Package 1: 12, 14, 9, 11, 16 Package 2: 2, 4, 7, 3, 1 Package 3: 10, 9, 6, 10, 12 Package 4: 7, 6, 6, 15, 12 A) F test for differences in variances. B) One-way ANOVA F test. C) t test for the differences in means. D) t test for the differences in means. E) t test for the mean difference. Use the following table for Q5-Q7 A realtor wants to compare the average sales-to-appraisal ratios of residential properties sold in four neighborhoods (A, B, C, and D). Four properties are randomly selected from each neighborhood and the ratios recorded for each, as shown below....
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## This note was uploaded on 03/28/2012 for the course GEN BUS 303 taught by Professor Mullins during the Spring '08 term at Wisconsin.

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Practice_Questions_for_Exam_3 - GB303 Fall 2010 Practice...

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