So the formula I was told to use was n=sigma squared/delta squared times (z alpha/2 + z beta) squaredI have the formula but im not sure how to use it. 15. In Norway, the distribution of birth weights for full-erm infants whose gestationalage is 40 weeks is approximately normal with mean u = 3500 grams and standard430 grams [19]. An investigator plans to conduct a study to deter-deviation o = Bibliography257mine 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 infantswhose 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. Atwo-sided test conducted at the 0.05 level of significance will be used. What sam-ple size is needed for this study?

Given : Significance level = 0.05 Population standard deviation , σ = 430 Lower Limit = 3200 Upper…

15. In Norway, the distribution of birth weights for full-term infants whose gestational is 40 weeks is approximately normal with mean u= 3500 grams and standard deviation o = 430 grams [19]. An investigator plans to conduct a study to deter- age

15. In Norway, the distribution of birth weights for full-term infants whose gestational is 40 weeks is approximately normal with mean u= 3500 grams and standard deviation o = 430 grams [19]. An investigator plans to conduct a study to deter- age

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

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 =

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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