Use the Confidence Level and Sample Data to Find a Confidence

question 21

Multiple Choice

Use the confidence level and sample data to find a confidence interval for estimating the population µ. Round your answer to the same number of decimal places as the sample mean.
-A group of 59 randomly selected students have a mean score of $29.5$ with a standard deviation of $5.2$ on a placement test. What is the $90 \%$ confidence interval for the mean score, $\mu$ , of all students taking the test?

• A) \(27.8 < \mu < 31.2\)
• B) \(27.9 < \mu < 31.1\)
• C) \(28.2 < \mu < 30.8\)
• D) \(28.4 < \mu < 30.6\)

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Definitions:

Unusual Items

Refers to uncommon or rare transactions that are not expected to occur frequently within the normal course of business.

Accounting Principles

Fundamental guidelines or rules that form the basis for accounting practices, such as relevance, reliability, comparability, and consistency.

Quick Ratio

A liquidity measure that indicates a company's ability to cover its short-term liabilities with its most liquid assets.

Percentage Increase

The proportional growth of a quantity over a specific period, calculated as the difference between the final and initial values divided by the initial value, multiplied by 100.