This is a Lesson 15 problem.

We are solving for sample size.

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Scenario:

We'd like to estimate the percentage of Towsonstudentswho carry a "Credit Card".

We want a 3.5% margin of error and99% confidence.

Default on p-hat to _____________. Seems reasonable.

Let's agree that 99% --> z = 2.576 and 95% --> z = 1.96, OK?

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Required:

Solve for sample size.

Round your answer up to the next whole number.

Example Answer: 504