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Problem

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Textbook Expert
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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