In the Past, the Average Age of Employees of a Large

question 102

Essay

In the past, the average age of employees of a large corporation has been 40 years. Recently, the company has been hiring older individuals. In order to determine whether there has been an increase in the average age of all the employees, a sample of 64 employees was selected. The average age in the sample was 45 years with a standard deviation of 16 years. Let $\alpha$ = .05.
a.State the null and the alternative hypotheses.
b.Compute the test statistic.
c.Using the p-value approach, test to determine whether or not the mean age of all employees is significantly more than 40 years.

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Definitions:

Implicit Costs

Non-out-of-pocket costs, often opportunity costs, that represent the lost opportunity to use resources in an alternative way.

Short Run

The period of time during which at least one input, such as plant size, is fixed and cannot be changed.

Long Run

A period in economics where all factors of production and costs are variable, allowing companies to adjust all inputs and operations to market demands.

Fixed Resource

A resource or asset in production whose quantity cannot easily be increased or decreased in the short term.