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In order to construct a 95% confidence interval for the population mean when the population standard deviation is unknown and the sample size is 15, you should use the t-value indicated as:
Differentiation
A business strategy aimed at developing and marketing unique products or services to stand out from competitors.
Fee-For-Service
A payment model where services are unbundled and paid for separately, often used in healthcare.
Advertising
The activity or profession of producing advertisements for commercial products or services.
Internet Business Model
A strategy outlining how an online business will create value, serve customers, and generate revenue through the Internet.
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