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You want to estimate the proportion of students at your university in favor of a longer spring break. Changing the confidence level from 95% to 90% will make the necessary sample size ________ if the margin of error stays the same.

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MrRoyal

Changing the confidence level from 95% to 90% will make the necessary sample size decrease if the margin of error stays the same.

How to complete the blank?

From the question, we understand that the confidence level decreases from 95% to 90%

When the confidence level decreases, the sample size increases because the standard error increases

Hence, the statement that completes the blank is decrease

Read more about confidence levels at:

https://brainly.com/question/17097944

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