91 80 99 110 95 106 78 121 106 100 97 82 100 83 115 104 a. Construct an 80% confidence interval for the popula- tion mean. di lo 2asnwola ords 20ob woH b b. Construct a 95% confidence interval for the population mean, and compare the width of this interval with that of part a. c. Carefully interpret each of the confidence intervals, and explain why the 80% confidence interval is narrower.

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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.