# What is the z-score for a 98% confidence interval?

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Nov 3, 2015

$z$ - score for 98% confidence interval is $2.33$

#### Explanation:

How to obtain this.

Half of $0.98 = 0.49$

Look for this value in the area under Normal curve table.

The nearest value is 0.4901

Its $z$ value is $2.33$

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