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:

Average Fixed Assets

The mean value of a company's fixed assets, like plant and equipment, calculated over a specific period of time.

Double-Declining Balance Method

A method of accelerated depreciation calculating an asset's loss of value at double the rate of the straight-line depreciation method.

Depreciation Expense

The allocated amount of an asset's cost that is written off as an expense over its useful life, reflecting the consumption of the asset.

Residual Value

The estimated amount that an asset will be worth at the end of its useful life.