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Sagot :
37.40 is large a sample should you take in confidence interval.
What does confidence interval mean?
- Your estimate's mean plus and minus the range of that estimate's fluctuation is called a confidence interval.
- If you repeat your test, you can expect your estimate to fall between these numbers with a reasonable degree of certainty.
- In statistics, confidence is another word for probability.
For the 95% confident interval of population mean , the margin of error (ME)
ME = Z 1 - 0.05/2 5/√n
2 = 1.96 * 6.24/√n
n = ( 1.94 * 6.24/2)²
n = 37.40
the required sample size (n) is 38 .
Learn more about confidence interval
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