Textbook ExpertVerified Tutor
11 Dec 2021
Given information
Confidence Interval = 95%
Step-by-step explanation
Step 1.
Level of significance() = 1 - Confidence interval.
Therefore area under both the tails (combined) = = 1-0.95 = 0.05
Since the area under normal curve is symmetric,
Therefore the area under each tail = = 0.025
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