Posted by **Skye** on Monday, May 24, 2010 at 7:07pm.

A survey of 480 high school students found that 37% had a pet. Find the margin of error. Round to the nearest percent. Use the margin of error to find an interval that is likely to contain the true population proportion.

* margin of error = +-5%

interval, 37% to 42%

* margin of error = +-5%

interval, 32% to 42%

* margin of error = +-7%

interval, 30% to 44%

* margin of error = +-7%

interval, 37% to 44%

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