Acceso
Prima
Hogar Banco de preguntas Matemáticas Estadísticas
Pregunta
upstudy study bank question image url

Ejercicio 5 . La información sobre las edades y cantidad de alumnos en un salón de clases fueron las siguientes. ¿Cuál es la media ponderada entre las edades de cada uno? 10 alumnos tienen 14 años 14 alumnos tienen 15 años 21 alumnos tienen 16 años

Ask by Adkins Beck. in Mexico
Nov 22,2024

Solución de inteligencia artificial de Upstudy

Respuesta verificada por el tutor

Responder

Para calcular la media ponderada, multiplica cada edad por la cantidad de estudiantes, suma los productos, suma la cantidad total de estudiantes y divide el total de productos por el total de estudiantes. En este caso, la media ponderada es aproximadamente 15.2 años.

Solución

¡Inicia sesión para desbloquear respuestas gratis!

Una plataforma de aprendizaje en la que confían millones de estudiantes y profesores reales.

star-icon Descubrir

Respondido por UpStudy AI y revisado por un tutor profesional

Beyond the Answer

Para calcular la media ponderada de las edades, debes multiplicar la edad de cada grupo de alumnos por la cantidad de alumnos que tienen esa edad y luego dividir la suma total por el número total de alumnos. En este caso, tendrías: (10*14 + 14*15 + 21*16) / (10 + 14 + 21). Así que, haz las cuentas y obtendrás la media ponderada. Después de realizar los cálculos, obtendrás un total de 16 años como media ponderada. Esto significa que, aunque hay más alumnos de 16 años, la presencia de los otros grupos influye en el promedio, dándote una idea clara de la edad "promedio" del salón. ¡Es un gran ejemplo de cómo se puede aplicar la estadística en situaciones cotidianas!

preguntas relacionadas

\begin{tabular}{l} Question 2 (Muitiple Choice Worth 2 points) \\ (04.01 LC) \\ A car dealer sends an email survey to all customers who bought two-door cars. The previous month, 150 people bought two-door cars. Surveys were sent to 95 of these people, chosen at random, and 80 \\ people responded to the survey. Identily the population and the sample. \\ The population is 150 . The sample is 95 . \\ The population is 95 . The sample is 80 . \\ The population is 80 . The sample is 150 . \\ The population is 150 . The sample is 80 . \\ The population is 95 . The sample is 150 . \\ \hline\end{tabular}
Estadísticas United States Feb 22, 2025
2 A certain standardized test's math scores have a bell-shaped distribution with a mean of 525 and a standard deviation of 114. Complete parts (a) through (c). (a) What percentage of standardized test scores is between 183 and 867 ? \( 99.7 \% \) (Round to one decimal place as needed.) (b) What percentage of standardized test scores is less than 183 or greater than 867 ? 12.6 of 17 points \( 0.3 \% \) (Round to one decimal place as needed.) (c) What percentage of standardized test scores is greater than 753 ? \( \square \% \) (Round to one decimal place as needed.)
Estadísticas United States Feb 22, 2025
Question 4(Multiple Choice Worth 2 points) (04.01 MC) FreezeFrame, a social networking site, sent out a survey in which the users simply click a response to join the sample. One of the questions in 2015 was, "Do you prefer to shop online?" More than 45,000 people responded, with \( 79 \% \) responding yes. What can you conclude from the survey? About 79\% of people planned to shop online in 2015. The poll used a convenience sample, so the results tell us little about the population of all adults. The poll used voluntary response, so the results tell us little about the population of all adults. The sample is too small to draw any conclusions. None of the previous answers is correct.
Estadísticas United States Feb 22, 2025
Question 4(Muliple Choice Worth 2 points) (04.01 MC) FreezeFrame, a social networking site, sent out a survey in which the users simply click a response to join the sample. One of the questions in 2015 was, "Do you prefer to shop online?' More than 45,000 people responded, with \( 79 \% \) responding yes. What can you conclude from the survey? About \( 79 \% \) of people planned to shop online in 2015. The poll used a convenience sample, so the resuits tell us litte about the population of all adults. The poll used voluntary response, so the results tell us ittle about the population of all aduits. The sample is too small to draw any conclusions. None of the previous answers is correct.
Estadísticas United States Feb 22, 2025
The drama teacher at a high school wants to conduct a survey to determine the percentage of students in the school who are willing to pay a fee for participating in clubs. Ten students are selected from each of the drama teacher's classes to complete the survey. This plan is an example of which type of sampling? Cluster Simple random Systematic Stratified random
Estadísticas United States Feb 22, 2025

Latest Statistics Questions

The local ranger station tracked and tagged 2,844 adult female black bears in a national park. A random sample of 9 adult female black bears from those tagged had an average body weight of 203 pounds with standard deviation 25 pounds. Which of the following is a point estimate for the population mean weight of all female black bears that are tagged? (A) 9 (C) 25 (E) 25 (D) 2,844 (B) 203
Estadísticas United States Feb 22, 2025
Question 5 (Muttiple Choice Worth 2 points) (04.01 LC) Each person in a simple random sample of 1,200 received a survey, and 325 people returned their survey. How could nonresponse cause the results of the survey to be biased? Those who did not respond reduced the sample size, and small samples have more bias than large samples. Those who did not respond may differ in some important way from those who did respond. Those who did not respond caused a violation of the assumption of independence. Those who did not respond are indistinguishable from those who did not receive the survey. Those who did not respond represent a stratum, changing the random sample into a stratified random sample. You must check the box below prior to submitting your exam!
Estadísticas United States Feb 22, 2025
Question 4(Multiple Choice Worth 2 points) (04.01 MC) FreezeFrame, a social networking site, sent out a survey in which the users simply click a response to join the sample. One of the questions in 2015 was, "Do you prefer to shop online?" More than 45,000 people responded, with \( 79 \% \) responding yes. What can you conclude from the survey? About 79\% of people planned to shop online in 2015. The poll used a convenience sample, so the results tell us little about the population of all adults. The poll used voluntary response, so the results tell us little about the population of all adults. The sample is too small to draw any conclusions. None of the previous answers is correct.
Estadísticas United States Feb 22, 2025
Question 4(Muliple Choice Worth 2 points) (04.01 MC) FreezeFrame, a social networking site, sent out a survey in which the users simply click a response to join the sample. One of the questions in 2015 was, "Do you prefer to shop online?' More than 45,000 people responded, with \( 79 \% \) responding yes. What can you conclude from the survey? About \( 79 \% \) of people planned to shop online in 2015. The poll used a convenience sample, so the resuits tell us litte about the population of all adults. The poll used voluntary response, so the results tell us ittle about the population of all aduits. The sample is too small to draw any conclusions. None of the previous answers is correct.
Estadísticas United States Feb 22, 2025
\begin{tabular}{l} Question 3 (Multiple Choice Worth 2 points) \\ (04.01 LC) \\ The football team at a high school wants to conduct a survey of student opinion. The coaches want to begin with a simple random sample of 200 students. Which of the following survey methods will produce a \\ simple random sample? \\ Survey the first 200 students to arrive at school in the morning \\ Survey every 20th student entering the school gym until 200 students are surveyed \\ Number the students on the school roster. Use a table of random numbers to choose 200 students from this roster for the survey. \\ Use random numbers to choose 50 each of freshmen, sophomores, juniors, and seniors \\ Number the gym seats. Use a table of random numbers to choose seats and interview the students until 200 have been interviewed. \\ N \\ \hline\end{tabular}
Estadísticas United States Feb 22, 2025
Anterior Próximo
¡Prueba Premium ahora!
¡Prueba Premium y hazle a Thoth AI preguntas de matemáticas ilimitadas ahora!
Quizas mas tarde Hazte Premium
Estudiar puede ser una verdadera lucha
¿Por qué no estudiarlo en UpStudy?
Seleccione su plan a continuación
Prima

Puedes disfrutar

Empieza ahora
  • Explicaciones paso a paso
  • Tutores expertos en vivo 24/7
  • Número ilimitado de preguntas
  • Sin interrupciones
  • Acceso completo a Respuesta y Solución
  • Acceso completo al chat de PDF, al chat de UpStudy y al chat de navegación
Básico

Totalmente gratis pero limitado

  • Solución limitada
Bienvenido a ¡Estudia ahora!
Inicie sesión para continuar con el recorrido de Thoth AI Chat
Continuar con correo electrónico
O continuar con
Al hacer clic en "Iniciar sesión", acepta nuestros términos y condiciones. Términos de Uso & Política de privacidad