It Is Generally Believed That Nearsightedness Affects About 12% of Children

question 69

Essay

It is generally believed that nearsightedness affects about 12% of children. A school district
gives vision tests to 133 incoming kindergarten children.
a. Describe the sampling distribution model for the sample proportion by naming the
model and telling its mean and standard deviation. Justify your answer.
b. Sketch and clearly label the model.
c. What is the probability that in this group over 15% of the children will be found to be
nearsighted?

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Definitions:

Spending Variance

The difference between the budgeted amount of expenses and the actual amount spent.

Corporate Function

Essential activities or responsibilities centralized at the corporate level, helping in achieving the organization's strategic objectives and supporting day-to-day operations.

Standard Cost Card

A detailed listing of the standard amounts of inputs and their costs that are required to produce one unit of a specific product.

Standard Variable Cost

The budgeted, per-unit cost of variable elements of production, such as materials and labor, under normal operating conditions.