A Sample of Size $n = 20$ Is Drawn from an Approximately Normal Population Whose Standard Deviation

question 55

Multiple Choice

A sample of size $n = 20$ is drawn from an approximately normal population whose standard deviation is $\sigma = 5.5$ . The sample mean is $\bar { x } = 52.4$ . Construct a $95 \%$ confidence interval for $\mu$ .

• A) \(35.69 < \mu < 69.11\)
• B) \(49.99 < \mu < 54.81\)
• C) \(52.40 < \mu < 54.81\)
• D) \(51.37 < \mu < 53.43\)

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Definitions:

Demand Curve

A visual chart that illustrates the connection between a product or service's price and the amount consumers want to buy over a specific time frame.

Price

Price is the amount of money expected, required, or given in payment for something.

Demand

The quantity of a good or service that consumers are willing and able to purchase at a given price point, over a specific time period.

Market Prices

The amount of money required to purchase a good or service in a market.