A Prison Official Wants to Estimate the Proportion of Cases

question 92

Short Answer

A prison official wants to estimate the proportion of cases of recidivism.Examining the records of 250 convicts,the official determines that there are 65 cases of recidivism.A confidence interval will be obtained for the proportion of cases of recidivism.Part of this calculation includes the estimated standard error of the sample proportion.For this sample,the estimated standard error is .

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Definitions:

Rectangular Coordinate

A system of specifying points on a plane using two distances, typically known as the x and y coordinates, which define the position relative to two perpendicular axes.

Square

To multiply a number by itself, or a geometric figure with four equal sides and four right angles.

Y-axis

The vertical line in a coordinate plane that measures the second coordinate of a point (its ordinate).

X-axis

The x-axis is the horizontal axis in a coordinate plane, used to represent one dimension of data or to plot the values of a function.