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The threat of unemployment is a major concern for working adults.

In a survey of $1{,}500\text{ working adults}$, $720\text{ men}$ and $780\text{ women}$ were asked the question, “Are you concerned about losing your job within the next $12\text{ months}$?”

Of those who were surveyed, $312\text{ males}$ said “yes,” and $240\text{ females}$ said “yes.”

Why would it be considered incorrect to use a one-proportion $Z$-interval in this situation?


This data follows the $T$ distribution.


It is not known if the sampling distribution is approximately normal.


The data compares two independent proportions.


No standard deviation is given.


The survey contains apparent bias.

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