True or False: The analysis of variance (ANOVA ) tests hypotheses about the population variance.
Indicate whether the statement is true or false
Q. 2An 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 the fewest mean number of passengers 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) t test for the mean difference B) F test for differences in variances
C) One-way ANOVA F test D) t test for the differences in means
Q. 3In a one-way ANOVA,
A) there is no interaction term.
B) an interaction effect can be tested.
C) the interaction term has (c - 1 ) (n - 1 ) degrees of freedom.
D) an interaction term is present.
Q. 4In a one-way ANOVA, the null hypothesis is always
A) some of the population means are different. B) there is no difference in the population means.
C) there is some treatment effect. D) all the population means are different.
Q. 5The degrees of freedom for the F test in a one-way ANOVA are
A) (c - 1 ) and (n - c). B) (c - n) and (n - 1). C) (n - c) and (c - 1). D) (n - 1 ) and (c - n).
Q. 6The F test statistic in a one-way ANOVA is
A) MSW/MSA. B) MSA/MSW. C) SSA/SSW. D) SSW/SSA.
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