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MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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So the formula I was told to use was
n=sigma squared/delta squared times (z alpha/2 + z beta) squared
I have the formula but im not sure how to use it.
![15. In Norway, the distribution of birth weights for full-erm infants whose gestational
age is 40 weeks is approximately normal with mean u = 3500 grams and standard
430 grams [19]. An investigator plans to conduct a study to deter-
deviation o =](https://content.bartleby.com/qna-images/question/e12869ed-f859-49f4-baa2-59815702973b/cf542aa4-4b06-4ca0-873b-b37bd524747b/uj7z8pr_thumbnail.jpeg)
Transcribed Image Text:15. In Norway, the distribution of birth weights for full-erm infants whose gestational
age is 40 weeks is approximately normal with mean u = 3500 grams and standard
430 grams [19]. An investigator plans to conduct a study to deter-
deviation o =

Transcribed Image Text:Bibliography
257
mine whether the birth weights of full-term babies whose mothers smoked through-
out pregnancy have the same mean. If the true mean birth weight for the infants
whose mothers smoked is as low as 3200 grams (or as high as 3800 grams), the in-
vestigator wants to risk only a 10% chance of faíling to detect this difference. A
two-sided test conducted at the 0.05 level of significance will be used. What sam-
ple size is needed for this study?
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