Use the file on Blackboard called "Excel Databases.xlsx". Locate the Manufacturer tab. The goal is to test to determine if there is a significant difference between mean Value Added by the manufacturer and the mean Cost of Materials in manufacturing assuming a 1% level of significance. Use Excel to perform the F-test for Equality of Variances at the 1% significance level. Which variable will be Group 1? What can you conclude from running the F-test? O a. Value Added by Manufacturer is Group 1. The F-test concludes that the population variances are unequal. O b. Cost of Materials is Group 1. The F-test concludes that the population variances are equal. OC. Value Added by Manufacturer is Group 1. The F-test concludes that the population variances are equal. O d. Cost of Materials is Group 1. The F-test concludes that the population variances are unequal.

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.