In a Random Sample of 651 Computer Scientists Who Subscribed

question 142

Multiple Choice

In a random sample of 651 computer scientists who subscribed to a web-based daily news update, it was found that the average salary was $46,816 with a population standard deviation of $12,557. Calculate a 91 percent confidence interval for the mean salary of computer scientists.

• A) [$25,469, $68,163]
• B) [$46,592, $47,040]
• C) [$46,157, $47,475]
• D) [$46,783, $46,849]
• E) [$45,981, $47,650]

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Definitions:

Graph

A visual representation of data, often showing relationships between two or more variables, typically displayed using lines, bars, or points.

Economic Loss

A decrease in financial value, resources, or capital, occurring in various forms such as lost revenue, costs, or opportunity costs.

Operating at a Loss

A financial status where a business's expenses surpass its revenues over a specific period, indicating negative profitability.

Short Run

A time frame in economics during which at least one input is fixed, limiting the ability of businesses to adjust production levels quickly.