A regional package delivery company is considering changing from full-size vans to minivans. The company sampled 3 minivans from each of three manufacturers.  Each minivan was driven for 5,000 miles, and the operating cost per mile was computed. The operating costs, in cents per mile, for the 9 minivans are provided in the table below: Manufacturer 1 Manufacturer 2 Manufacturer 3 15 11 14 14 13 16 13 12 15   Compute SST, SSE, and SS total and complete the ANOVA table. Source of Variation Sum of Squares df Mean Sum of Squares F  Treatment         Error         Total           State the null hypothesis : (Choose 1 or 2) The treatment means are the same The treatment means are different   State the alternative hypothesisl hypothesis : (Choose 1 or 2) The treatment means are the same The treatment means are different   d. What is the decision rule? Reject Ho if F is greater than    e. What is your decision :(Choose 1 or 2) Reject Ho Do not Reject Ho

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Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.