## Question

###### An airline wants select computer software package for its reservalion systcm Four software packages (1,2,3, and 4) are commercially available The airline will choose the package that bumps as few passengers a9 possible during month An experiment is set uP in which each package used make reservations for 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:ANOVA Svurce %

An airline wants select computer software package for its reservalion systcm Four software packages (1,2,3, and 4) are commercially available The airline will choose the package that bumps as few passengers a9 possible during month An experiment is set uP in which each package used make reservations for 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: ANOVA Svurce %f Variation Between Groups Within Groups MS P-value 0.001474 F crit 3,238867 212.4 136.4 8304985 8,525 Total 348.8 10) Referring to Table 11-2, the among group (between-group) Iean squares is A) 70.8 B) 8.525 212.4 D) 637.2 11) Referring Table 11-2,at a significance level of 1%, A) there is sufficient evidence conclude that the mean number of customers bumped by the packages are all the same there is insufficient evidence to conclude that the mean number of customers bumped by the packages are notall the same: there is insufficient evidence conclude that the mean number of customers bumped by the - packages are all the same: D) there is sufficient evidence conclude that the mean number of customers bumped by the packages not all the same 12) professor would like to test the hypolhesis that the average number of minutes that sludent needs to complcte statistics exam is equal to 45 minutes Type error would occur if the professor concludes that the average eyan timc A) equal to 45 minutes when, in reality, the average time is less than 45 minutes_ B) equal to 45 minutes when, in reality, the average time is nol equal to 45 minutes not equal to 45 minules when, in reality, the average time is greater than 45 minutes D) not equal to 45 minutes when, in reality, the average time equal to 45 minules 13) Ten different families are tested for the number of gallons water day they use before and after viewing conservation vidco; Construct 90%a confidence interva" for the mean of the difference of the "before" minus the after"' times: Before 33 33 38 33 35 35 40 40 40 35 Aftcr 34 28 25 28 35 33 31 28 35 33 A) (3.47,5.35) B) (3.14,7. 88) C) (1.25, 6.35) D) (2.42, 7.98)