Which of the Formulas Below Would Be Used to Determine $$n = \frac { \sigma ^ { 2 } z ^ { 2 } } { D ^ { 2 } }$$

question 4

Multiple Choice

Which of the formulas below would be used to determine the sample size using the formula for the standard error of the mean?

• A) \[n = \frac { \sigma ^ { 2 } z ^ { 2 } } { D ^ { 2 } }\]
• B) \[n = \frac { \pi ( 1 - \pi ) z ^ { 2 } } { D ^ { 2 } }\]
• C) \[\sigma X = D / z\]
• D) A and C are correct.

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