Data Analysis

The following that represent the number of packages of 5 popular brands of cigarettes sold by a supermarket on 8 randomly selected days: A B C D E 21 35 32 35 12 27 45 60 33 32 53 29 45 29 31 28 14 47 41 19 23 36 31 40 42 40 23 22 36 25 38 31 20 43 48 35 42 2942 30 Perform an analysis of variance, at the 0.05 level of significance, and determine whether or not the 5 brands sell, on the average, the same number of cigarettes at this supermarket. Solution: Hypothesis: II. Level of significance: III. ANOVA TABLE Source of Sum of Squares Degrees of Mean Square Computed (f) Tabulated Variation Freedom (f) Column Error Total Computations: (PRINT-SCREEN YOUR EXCEL SOLUTION) IV. DECISION: V. ConclusionA study is made to determine the force required to pull apart pieces of glued plastic. Three types of plastic were tested using 4 different levels of humidity. The results, in kilograms, are given as follows: Plastic Type Humidity 30% 50% 70% 90% 39.0 33. 1 33.8 33.0 OOD 36.9 27.2 29.7 28.5 27.4 29.2 26.7 30.9 Use a 0.05 level of significance to test the hypothesis that there is no difference in the mean force required to pull the glued plastic apart (a) When the different types of plastic are used (b) For different humidity conditions I. Hypothesis: 1. Level of significance: III. ANOVA TABLE Source of Sum of Squares Degrees of Mean Square Computed (f) Tabulated Variation Freedom (f) Row Column Error Total Computations: PRINT-SCREEN YOUR EXCEL SOLUTION) IV. DECISION: V. Conclusion