Una entidad gubernamental desea estimar el consumo promedio mensual de ciertas hortalizas. Los estudios anteriores muestran que el consumo de dichas hortalizas tiene una desviación estándar de 500$. Si se desea una estimación con un nivel de confianza de 95.0% y un margen de error de ±50$. ¿Cuál debe ser tamaño de la muestra? <!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4; mso-font-charset:0; mso-generic-font-family:roman; mso-font-pitch:variable; mso-font-signature:-536870145 1107305727 0 0 415 0;}@font-face {font-family:"Bookman Old Style"; panose-1:2 5 6 4 5 5 5 2 2 4; mso-font-charset:0; mso-generic-font-family:roman; mso-font-pitch:variable; mso-font-signature:647 0 0 0 159 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-unhide:no; mso-style-qformat:yes; mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; mso-bidi-font-size:10.0pt; font-family:"Times New Roman",serif; mso-fareast-font-family:"Times New Roman"; mso-font-kerning:14.0pt; mso-fareast-language:EN-US; mso-bidi-font-weight:bold;}.MsoChpDefault {mso-style-type:export-only; mso-default-props:yes; font-size:10.0pt; mso-ansi-font-size:10.0pt; mso-bidi-font-size:10.0pt;}@page WordSection1 {size:612.0pt 792.0pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;}div.WordSection1 {page:WordSection1;}-->

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Se va a realizar un estudio con el objetivo de determinar el nivel promedio de plomo en la sangre de niños menores de seis años. En estudios anteriores se ha encontrado que el nivel promedio de plomo en la sangre es de 12.25 miligramos por decilitro con una desviación estándar de 8.04 miligramos por decilitro. Qué tamaño debe tener la muestra si el investigador quiere asegurar una confiabilidad de 95.0% y un margen de error que no pase de 1.5 miligramos por decilitro.

De una población de egresados se desea conocer el ingreso promedio de ellos, con un nivel de confianza de 90.0% y un margen de error de ± 800.0 $. En un estudio anterior se encontró una desviación estándar del ingreso de este grupo igual a 4,000$. ¿Cuántos elementos debe tener la muestra?

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What was the 0.2% proof stress for the Al 6063 sample that you determined in question 2(d)?

Give your answer in MPa, to at least 2 significant figures

Name the labeled stomach region.

Name for the molecule that an enzyme works on to produce a product.

Name the anatomical structure labeled.

Name the anatomical structure labeled.