Create and Interpret a Confidence Interval for the Difference of Two

question 5

Multiple Choice

Create and interpret a confidence interval for the difference of two proportions.
-Previous surveys reported that more men than women trade stocks online. A local
Brokerage firm randomly selected a sample of investors. They found that 45 out of 234
Men traded online and 42 out of 251 women traded online. The 95% confidence interval
For the difference in proportions is

• A) 4% to 9%
• B) -4% to 9%
• C) 2% to 12%
• D) -2% to 12%
• E) -2% to -4%

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Definitions:

Plantwide Predetermined Rate

A single overhead absorption rate calculated for an entire manufacturing plant, used to allocate manufacturing overhead to individual products.

Machine-Hours

A measure of production time, indicated by the number of hours machines are operating in the manufacturing process.

Manufacturing Cost

The total cost incurred by a company to produce goods, including raw materials, labor, and overhead.

Calculated Selling Price

The calculated selling price is the price at which a product must be sold to cover its costs and achieve a desired profit margin.