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

Mack’s Toy Shop made 600 trains yesterday and found that 30 were defective. They
plan to make 4,500 trains this week.
Using the information given, how many trains are expected to be defective?
225 trains
6,000 trains
15 trains
500 trains

Ask by Paul Weber. in the United States
Mar 26,2025

Solución de inteligencia artificial de Upstudy

Respuesta verificada por el tutor

Responder

Expected defective trains this week are 225.

Solución

To find the number of trains expected to be defective this week, we can use the ratio of defective trains to total trains made yesterday.
Given:
  • Total trains made yesterday = 600
  • Defective trains yesterday = 30
We can calculate the ratio of defective trains to total trains made yesterday:
Now, we can use this ratio to find the number of defective trains expected this week:
Substitute the values:
Calculate the number of defective trains expected this week.
Calculate the value by following steps:
  • step0: Calculate:
  • step1: Reduce the fraction:
  • step2: Reduce the numbers:
  • step3: Simplify:

Respondido por UpStudy AI y revisado por un tutor profesional

error msg
Explicar
Simplifique esta solución

Bonus Knowledge

To find the expected number of defective trains, you first need to calculate the defect rate from yesterday’s production. In yesterday’s production, 30 out of 600 trains were defective, so the defect rate is 30/600, which simplifies to 1/20 or 5%. Now, applying this defect rate to the planned production of 4,500 trains: 5% of 4,500 is 0.05 × 4,500 = 225. Therefore, you can expect about 225 defective trains this week.
So the answer is 225 trains.

preguntas relacionadas

1 A poll conducted by the UC Berkeley Institute of Govermmental Studies in 2019 found that 51.8% of 4527 respondents said they considered moving out of the state. a) Are the conditions for constructing a confidence interval met? Select all that apply. ◻ A. Yes, all assumptions and conditions are met. ◻ B. No, because there are less than 10 expected "successes" and 10 expected "failures." ◻ C. No, because there are at least 10 expected "successes" and 10 expected "failures." ◻ D. No, because the sample is not a simple random sample. ◻ E. No, because the sample is greater than 10% of the population. ◻ F. No, because the sample is a simple random sample. ◻ G. No, because the sample is less than 10% of the population.
Estadísticas United States Mar 31, 2025
In the past, zest of al homes whth a stapatheme parent. the father is the stay atheme parent An mdependent researeh (a) What sample she is needed if the researd firmis goat is to estimate the curfent prepertion of hemes with a stay atheme parett in which the father is the stajatheme parent with a margin of effer of 0.04B Use a 85% cenfldence leveh (hound your anstrer up to the nearest whele number.) ◻ (b) Repeat part (a) using a 890 confidence leveh (Round your answer up to the nearest whole number) ◻
Estadísticas United States Mar 31, 2025
2. Pew Research in 2018 polled a random sample of 1058 U.S. teens (ages 13−17 ) about Internet use, 44.7% reported that they were online "almost constantly"-a fact of great interest to advertisers. Complete parts a through c below. a) Explain the meaning of p^=0.447 in the context of this situation. Choose the correct answer below. A. The meaning of p^=0.447 is that 44.7% of the 1058 teens in the sample reported that they were online "almost constantly." This is the researchers' best estimate of p, the proportion of all U.S. teens who would say that. B. The meaning of p^=0.447 is that 44.7% of the 1058 teens in the sample reported that they were online "almost constantly." This is the researchers' best estimate of p^, the proportion of the 1058 teens in the sample who said that. C. The meaning of p^=0.447 is that the researchers have 95% confidence that 44.7% of all U.S. teens would report that they were online "almost constantly." D. The meaning of p^=0.447 is that the researchers have 95% confidence that 44.7% of the 1058 teens in the sample reported that they were online "almost constantly."
Estadísticas United States Mar 31, 2025
Pew Research in 2018 polled a random sample of 1058 U.S. teens (ages 13-17) about Internet use. 44.7% reported that they were online "almost constantly" -a fact of great interest to advertisers. Complete parts a through c below. a) Explain the meaning of p^=0.447 in the context of this situation. Choose the correct answer below. A. The meaning of p^=0.447 is that 44.7% of the 1058 teens in the sample reported that they were online "almost constantly." This is the researchers' best estimate of p, the proportion of all U.S. teens who would say that. B. The meaning of p^=0.447 is that 44.7% of the 1058 teens in the sample reported that they were online "almost constantly." This is the researchers' best estimate of p^, the proportion of the 1058 teens in the sample who said that. C. The meaning of p^=0.447 is that the researchers have 95% confidence that 44.7% of all U.S. teens would report that they were online "almost constantly." D. The meaning of p^=0.447 is that the researchers have 95% confidence that 44.7% of the 1058 teens in the sample reported that they were online "almost constantly." b) Calculate the standard error of p^. SE(p^)= ◻ (Round to five decimal places as needed.)
Estadísticas United States Mar 31, 2025
ork 13.6 HW - Choosing the Sample Question 1, 13.8.19-T HW Scorr: OW, 0 off Paints Pat2 13 Pointre 0of 3 Smo Ifs believed that as many as 20% of adifts over 50 never graduated from high school. Wi wish to see if this percentige is the terne anong the 25 to 30 nge prop a) How many of this younger age group must we survey in order to estimate the proportion of non-grads to aitin 4\% with gotid comblence? n * 271 (Round up to the nearest integer) b) Suppose we wast to cut the margin of ernor to 3%. What is the necessary sarnple size? n= ◻ (Round up to the nearest intoger)
Estadísticas United States Mar 31, 2025

Latest Statistics Questions

Pew Research in 2018 polled a random sample of 1058 U.S. teens (ages 13-17) about Internet use. 44.7% reported that they were online "almost constantly" -a fact of great interest to advertisers. Complete parts a through c below. a) Explain the meaning of p^=0.447 in the context of this situation. Choose the correct answer below. A. The meaning of p^=0.447 is that 44.7% of the 1058 teens in the sample reported that they were online "almost constantly." This is the researchers' best estimate of p, the proportion of all U.S. teens who would say that. B. The meaning of p^=0.447 is that 44.7% of the 1058 teens in the sample reported that they were online "almost constantly." This is the researchers' best estimate of p^, the proportion of the 1058 teens in the sample who said that. C. The meaning of p^=0.447 is that the researchers have 95% confidence that 44.7% of all U.S. teens would report that they were online "almost constantly." D. The meaning of p^=0.447 is that the researchers have 95% confidence that 44.7% of the 1058 teens in the sample reported that they were online "almost constantly." b) Calculate the standard error of p^. SE(p^)= ◻ (Round to five decimal places as needed.)
Estadísticas United States Mar 31, 2025
2. Pew Research in 2018 polled a random sample of 1058 U.S. teens (ages 13−17 ) about Internet use, 44.7% reported that they were online "almost constantly"-a fact of great interest to advertisers. Complete parts a through c below. a) Explain the meaning of p^=0.447 in the context of this situation. Choose the correct answer below. A. The meaning of p^=0.447 is that 44.7% of the 1058 teens in the sample reported that they were online "almost constantly." This is the researchers' best estimate of p, the proportion of all U.S. teens who would say that. B. The meaning of p^=0.447 is that 44.7% of the 1058 teens in the sample reported that they were online "almost constantly." This is the researchers' best estimate of p^, the proportion of the 1058 teens in the sample who said that. C. The meaning of p^=0.447 is that the researchers have 95% confidence that 44.7% of all U.S. teens would report that they were online "almost constantly." D. The meaning of p^=0.447 is that the researchers have 95% confidence that 44.7% of the 1058 teens in the sample reported that they were online "almost constantly."
Estadísticas United States Mar 31, 2025
You may need to use the appropriate appendix table or technology to answer this question. In the past, 26% of all homes with a stay-at-home parent, the father is the stay-at-home parent. An independent research firm has been charged with conducting a sample survey to obtain more current information. (a) What sample size is needed if the research firm's goal is to estimate the current proportion of homes with a stay-at- home parent in which the father is the stay-at-home parent with a margin of error of 0.04 ? Use a 95% confidence level. (Round your answer up to the nearest whole number.) (b) Repeat part (a) using a 99% confidence level. (Round your answer up to the nearest whole number.) (b)
Estadísticas United States Mar 31, 2025
In the past, zest of al homes whth a stapatheme parent. the father is the stay atheme parent An mdependent researeh (a) What sample she is needed if the researd firmis goat is to estimate the curfent prepertion of hemes with a stay atheme parett in which the father is the stajatheme parent with a margin of effer of 0.04B Use a 85% cenfldence leveh (hound your anstrer up to the nearest whele number.) ◻ (b) Repeat part (a) using a 890 confidence leveh (Round your answer up to the nearest whole number) ◻
Estadísticas United States Mar 31, 2025
ork 13.6 HW - Choosing the Sample Question 1, 13.8.19-T HW Scorr: OW, 0 off Paints Pat2 13 Pointre 0of 3 Smo Ifs believed that as many as 20% of adifts over 50 never graduated from high school. Wi wish to see if this percentige is the terne anong the 25 to 30 nge prop a) How many of this younger age group must we survey in order to estimate the proportion of non-grads to aitin 4\% with gotid comblence? n * 271 (Round up to the nearest integer) b) Suppose we wast to cut the margin of ernor to 3%. What is the necessary sarnple size? n= ◻ (Round up to the nearest intoger)
Estadísticas United States Mar 31, 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
Pop-up title
Lorem ipsum dolor sit amet, te everti debitis assentior nam, ne illum utroque principes sed. Ridens phaedrum an vix, qui in dolore appareat.