A Random Sample of 144 Observations Has a Mean of 20

question 5

Multiple Choice

A random sample of 144 observations has a mean of 20, a median of 21, and a mode of 22.The population standard deviation is known to equal 4.8.The 95.44% confidence interval for the population mean is

• A) 15.2 to 24.8.
• B) 19.20 to 20.80.
• C) 19.216 to 20.784.
• D) 21.2 to 22.8.

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Definitions:

Ill-Tempered

Characterized by a tendency towards easily becoming angry or irritated, often showing a lack of patience or tolerance.

Stubborn

Possessing a firm adherence to one's own opinions or plans, often to the point of resisting change or advice from others.

Flexible

Capable of being adapted or changed to accommodate new circumstances.

Impatient

The feeling of annoyance or irritation when faced with delay, often leading to a desire for immediate satisfaction or action.