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The Effect of Decreasing the Student-Teacher Ratio by One Is

question 58

Essay

The effect of decreasing the student-teacher ratio by one is estimated to result in an improvement of the districtwide score by 2.28 with a standard error of 0.52. Construct a 90% and 99% confidence interval for the size of the slope coefficient and the corresponding predicted effect of changing the student-teacher ratio by one. What is the intuition on why the 99% confidence interval is wider than the 90% confidence interval?


Definitions:

Total Cost Method

An accounting method that involves recording all production costs to inventory until the goods are sold, at which point they are expensed.

Markup

The amount added to the cost of a product to determine its selling price, usually expressed as a percentage of the cost.

Differential Analysis

The process of comparing the costs and benefits of alternative business decisions.

Processing Cost

The expenses incurred in the course of transforming raw materials into finished products.

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