Pregunta
upstudy study bank question image url

  1. Mickey D’s In a study of the accuracy of fast food drive-through orders, McDonald’s had 33
    orders that were not accurate among 362 orders observed (based on data from magazine).
    Use a 0.05 significance level to test the claim that the rate of inaccurate orders is equal to .
    Does the accuracy rate appear to be acceptable?

Ask by Li Peterson. in the United States
Jan 23,2025

Solución de inteligencia artificial de Upstudy

Respuesta verificada por el tutor

Responder

There is not enough evidence to conclude that the rate of inaccurate McDonald’s drive-through orders differs from 10%. Therefore, the accuracy rate appears to be acceptable.

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

Extra Insights

To test the claim, we start by setting up our hypotheses:
  • Null Hypothesis ( ): The rate of inaccurate orders is (or ).
  • Alternative Hypothesis ( ): The rate of inaccurate orders is not (or ).
The sample proportion of inaccurate orders from the observed data is calculated as:
Next, we can use a z-test for proportions. The test statistic is calculated using the formula:
where and .
Plugging in the numbers:
Now, we look for the critical z-value for a two-tailed test at a 0.05 significance level, which is approximately ±1.96. Since our calculated z-value (-0.35) lies between -1.96 and 1.96, we fail to reject the null hypothesis.
Based on this test, there is not enough evidence to claim that the rate of inaccurate orders is significantly different from . Thus, it appears that the accuracy rate could be considered acceptable, as it does not significantly deviate from the standard.

preguntas relacionadas

\begin{tabular}{l} ter 13 Review \\ \( 1 \leftarrow \quad \begin{array}{l}\text { A Morning Consult/Politico poll of } 1997 \text { registered voters in July } 2020 \text { asked a standard polling question of whether the United States was headed in the "Right Direction" or } \\ \text { was on the "Wrong Track." } 75.3 \% \text { said that things are on the wrong track vs. } 24.7 \% \text { who said "right direction." Complete parts a and b. } 51.35 \%, 19 \text { of } 37 \text { points } \\ \text { Part } 1 \text { of 2 }\end{array} \) \\ \( \begin{array}{l}\text { a) Calculate the margin of error for the proportion of all U.S. adults who think things are on the wrong track for } 99 \% \text { confidence. } \\ \text { ME }=\square \text { (Round to three decimal places as needed.) }\end{array} \) \\ \hline\end{tabular}

Latest Statistics Questions

¡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