A Random Sample of Size 36 Is Taken from a Population

question 18

Multiple Choice

A random sample of size 36 is taken from a population with mean µ = 17 and standard deviation σ = 6. The probability that the sample mean is between 15 and 18 is ________.

• A) 0.0228
• B) 0.8186
• C) 0.8413
• D) 0.8641

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Definitions:

Sales Forecasts

Predictions of the sales that a company expects to achieve in a certain period, based on market research, trend analysis, and historical sales data.

Customer Service Personnel

Employees tasked with assisting customers by addressing inquiries, solving problems, and providing information about products or services.

Unbundling

The process of breaking down a product or service into its component parts to offer them separately, often allowing consumers more choice and flexibility.

Product Set

A collection of products that a company manufactures or sells, often related in usage or marketed under a single brand.