A procurement specialist has purchased 26 resistors from vendor 1 and 28 resistors from vendor 2. Let X1,1, X1,2,..,X26 represent the vendor 1 observed resistances, which are assumed to be normally and independently distributed with mean 100 ohms and standard deviation 1.6 ohms. Similarly, let X2.1,X2.2,...,X28 represent the vendor 2 observed resistances, which are assumed to be normally and independently distributed with mean 106 ohms and standard deviation of 2.0 ohms. What is the sampling distribution of X1 - X2 ?What is the standard error of X1 - X2 ? The sampling distribution of X1 –X2 is N(µx,-X, = i (Round the second answer to four decimal places.)

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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.