Problem N5590 probability theory confidence interval
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5590. x̅=4.28, n=64, σ=4. Find the confidence interval for estimating with a reliability of 0.99 the unknown mathematical expectation a of a normally distributed feature X of the general population, if the general standard deviation σ=4, the sample mean x̅v=4.28 and the sample size n=64 are known.
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- Updated on the site 22.04.2023
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Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
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Problem N5590 probability theory confidence interval
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Sold <10
0 000 X
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Cumulative discount
| 30 $ | the discount is 10% |
| 20 $ | the discount is 7% |
| 18 $ | the discount is 6% |
| 15 $ | the discount is 5% |
| 12 $ | the discount is 4% |
| 9 $ | the discount is 3% |
| 6 $ | the discount is 2% |
| 3 $ | the discount is 1% |
Check your discount
Amount of purchases from the seller: $
Your discount: %
Cumulative discount
| 30 $ | the discount is 10% |
| 20 $ | the discount is 7% |
| 18 $ | the discount is 6% |
| 15 $ | the discount is 5% |
| 12 $ | the discount is 4% |
| 9 $ | the discount is 3% |
| 6 $ | the discount is 2% |
| 3 $ | the discount is 1% |
Check your discount
Amount of purchases from the seller: $
Your discount: %