The Makers of a Soft Drink Want to Identify the Average

question 27

Essay

The makers of a soft drink want to identify the average age of its consumers. A sample of 55 consumers was taken. The average age in the sample was 21 years with a standard deviation of 4 years.
a.Construct a 95% confidence interval for the true average age of the consumers.
b.Construct an 80% confidence interval for the true average age of the consumers.
c.Discuss why the 95% and 80% confidence intervals are different.

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Definitions:

Activity-Based Costing

A costing methodology that assigns costs to products and services based on the activities and resources that go into producing them.

Overhead Cost Per Unit

The indirect manufacturing costs allocated to each unit of product produced.

Departmental Overhead Rate

A rate used to allocate overhead costs to specific departments, calculated based on the relationship between indirect costs and activity level.

Own Allocation Base

Refers to the specific denominator that a company chooses to allocate indirect costs to different cost objects, based on their usage or benefit from those costs.