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##### Stats Ten Problem Questions

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Question;T6Question 1TABLE 11-3A realtor wants to compare the average sales-to-appraisal ratios of residential properties sold in four neighbourhoods (A, B, C, and D). Four properties are randomly selected from each neighbourhood and the ratios recorded for each, as shown below.A) 1.2, 1.1, 0.9, 0.4 C) 1.0, 1.5, 1.1, 1.3B) 2.5, 21, 1.9, 1.6 D) 0.8, 1.3, 1.1, 0.7At number B, it looks like 21, so I am not sure if it should read 21 or 2.1Interpret the results of the analysis summarized in the following table:Source df SS MS F PR > FNeighborhoodsError 12 3.1819 1.0606 10.76 0.001Total 4.3644 Referring to Table 11-3, the value of the test statistic for Levine?s test for homogeneity of variances is 0.25 0.37 4.36 10.76Question 2TABLE 11-2An 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 as few 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 obtained, which gives rise to the following Excel output:ANOVASource OF VARIATION SS df MS F P-value F critBetween GroupsWithin Groups 212.4136.4 3 8.525 8.304985 0.001474 3.238867Total 348.8 Referring to Table 11-2, the among-group (between-group) mean squares is 8.525 70.8 212.4 637.2Question 3TABLE 11-3A realtor wants to compare the average sales-to-appraisal ratios of residential properties sold in four neighbourhoods (A, B, C, and D). Four properties are randomly selected from each neighbourhood and the ratios recorded for each, as shown below.A) 1.2, 1.1, 0.9, 0.4 C) 1.0, 1.5, 1.1, 1.3B) 2.5, 21, 1.9, 1.6 D) 0.8, 1.3, 1.1, 0.7At number B, it looks like 21, so I am not sure if it should read 21 or 2.1Interpret the results of the analysis summarized in the following table:Source df SS MS F PR > FNeighborhoodsError 12 3.1819 1.0606 10.76 0.001Total 4.3644 Referring to Table 11-3, the within group mean squares is 0.0985. 0.2910. 1.0606. 1.1825.Question 4TABLE 11-3A realtor wants to compare the average sales-to-appraisal ratios of residential properties sold in four neighbourhoods (A, B, C, and D). Four properties are randomly selected from each neighbourhood and the ratios recorded for each, as shown below.A) 1.2, 1.1, 0.9, 0.4 C) 1.0, 1.5, 1.1, 1.3B) 2.5, 21, 1.9, 1.6 D) 0.8, 1.3, 1.1, 0.7At number B, it looks like 21, so I am not sure if it should read 21 or 2.1Interpret the results of the analysis summarized in the following table:Source df SS MS F PR > FNeighborhoodsError 12 3.1819 1.0606 10.76 0.001Total 4.3644 Referring to Table 11-3, the among group degrees of freedom is 3. 4. 12. 16.Question 5A completely randomized design has only one factor with several treatment groups. can have more than one factor, each with several treatment groups. has one factor and one block. has one factor and one block and multiple values.Question 6In a one-way ANOVA, the null hypothesis is always there is no treatment effect. there is some treatment effect. all the population means are different. some of the population means are different.Question 7In a one-way ANOVA, if the computed F statistic exceeds the critical F value we may reject H0 since there is evidence all the means differ. reject H0 since there is evidence of a treatment effect. not reject H0 since there is no evidence of a difference. not reject H0 because a mistake has been made.Question 8TABLE 11-3A 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.A) 1.2, 1.1, 0.9, 0.4 C) 1.0, 1.5, 1.1, 1.3B) 2.5, 21, 1.9, 1.6 D) 0.8, 1.3, 1.1, 0.7At number B, it looks like 21, so I am not sure if it should read 21 or 2.1Interpret the results of the analysis summarized in the following table:Source df SS MS F PR > FNeighborhoodsError 12 3.1819 1.0606 10.76 0.001Total 4.3644 Referring to Table 11-3, the critical value of Levene's test for homogeneity of variances at a 5% level of significance is 0.64 2.48 3.29 3.49Question 9TABLE 11-3A 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.A) 1.2, 1.1, 0.9, 0.4 C) 1.0, 1.5, 1.1, 1.3B) 2.5, 21, 1.9, 1.6 D) 0.8, 1.3, 1.1, 0.7At number B, it looks like 21, so I am not sure if it should read 21 or 2.1Interpret the results of the analysis summarized in the following table:Source df SS MS F PR > FNeighborhoodsError 12 3.1819 1.0606 10.76 0.001Total 4.3644 Referring to Table 11-3, the null hypothesis for Levene's test for homogeneity of variances is H0: A = B = C = D H0: MA = MB = MC = MD H0: A2 = B2 = C2 = D2 H0:?A =?B =?C =?DQuestion 10TABLE 11-2An 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 as few 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 obtained, which gives rise to the following Excel output:ANOVASource OF VARIATION SS df MS F P-value F critBetween GroupsWithin Groups 212.4136.4 3 8.525 8.304985 0.001474 3.238867Total 348.8 Referring to Table 11-2, the total degrees of freedom is 3 4 16 19

Paper#61865 | Written in 18-Jul-2015

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