Use the Given Degree of Confidence and Sample Data to Find

question 6

Multiple Choice

Use the given degree of confidence and sample data to find a confidence interval for the population standard deviation σ.
Assume that the population has a normal distribution. Round the confidence interval limits to the same number of
decimal places as the sample standard deviation.
-To find the standard deviation of the diameter of wooden dowels, the manufacturer measures 19 randomly selected dowels and finds the standard deviation of the sample to be $s = 0.16$ . Find the 95\% confidence interval for the population standard deviation $\sigma$ .

• A) \(0.13 < \sigma < 0.22\)
• B) \(0.11 < \sigma < 0.25\)
• C) \(0.15 < \sigma < 0.21\)
• D) \(0.12 < \sigma < 0.24\)

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Definitions:

Revenue Collection

The process of gathering funds collected from sales, services, taxes, or other sources by an organization or government.

Short-Term Financing Cost

The interest or other costs associated with borrowing funds for a short duration, typically less than one year.

Standardized Products

Goods or services produced to a uniform specification that ensures consistency and compatibility across different uses and customers.

Credit Periods

The timeframe given by a seller to the buyer to pay for the goods or services received, usually measured in days.