To find a 98 percent confidence interval where the standard deviation is known, the correct z-value to use for the critical value is 2.33.

Name: To find a 98 percent confidence interval where the standard deviation is known, the correct z-value to use for the critical value is 2.33.
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Quizplus · Accepted Answer

The z-value for a 98% confidence interval is approximately 2.33, which corresponds to the critical value for the standard normal distribution that captures the central 98% of the data.

To Find a 98 Percent Confidence Interval Where the Standard