It Is Known That the Population Variance Equals 484

question 21

Multiple Choice

It is known that the population variance equals 484. With a 0.95 probability, the sample size that needs to be taken if the desired margin of error is 5 or less is

• A)25
• B)74
• C)189
• D)75

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Definitions:

Standard Output

The default data stream for output generated by a program, typically the computer screen.

C++

A general-purpose programming language created as an extension of the C programming language, supporting object-oriented, procedural, and generic programming.

Cin

A standard input stream in C++, used for reading input from standard input (typically the keyboard).