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S3 Confidence intervals Watch

1. This seems a stupid question but why does it equal to 6.86 and not 5?
I know 5 would just give me 1.96 again but I dont understand the 6.86
2. (Original post by RK1998)
This seems a stupid question but why does it equal to 6.86 and not 5?
I know 5 would just give me 1.96 again but I dont understand the 6.86

.
3. (Original post by Zacken)
.
So it's just the difference of the intervals divided by 2.
Thank you so much

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4. (Original post by RK1998)
So it's just the difference of the intervals divided by 2.
Thank you so much
Yes, you know the width of an interval is given by but the width here is the difference of the limits.

So and then dividing both sides by 2 gets you your answer.

You're very welcome.

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