A simple random sample of 25 items resulted in a sample mean of 30. The population standard deviation is o =15. There is a 95 probability that the sample mean will provide a margin of etror of O a) 4.935 O b) 5.88 O c) 5.367 d) 1.176

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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.