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Calculation error while computing 99% Confident Interval

Calculation error while computing 99% Confident Interval

Super Learner
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Hi Team,
 
Greetings for the day!!!
 
In the lecture Confidence Intervals: Population variance known, z-score; at 06:42 the confidence interval is calculated to be [93135, 107206]. But shouldn’t it be [93135, 107265] ?
 
Because (93135 + 107265) / 2 = 100200 which is the Point Estimate of the Mean.
 
Kindly clarify.

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