STATISTICAL TECHNIQUES AND TOOLS
CONFIDENCE INTERVALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Find the value of zc for a 90% confidence interval.
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-1.96
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1.645
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1.440
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-1.598
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Explanation:
Detailed explanation-1: -Where Z ( 0.90 ) Z(0.90) Z(0.90) is the z-score for 90% confidence interval. It is a fixed value that we take from the statistical table. Z-score for 90% confidence interval is equal to 1.645.
Detailed explanation-2: -For a 95% confidence interval Zcritical = 1.96.
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