Low back pain (LBP) is a serious health problem in many industrial settings.The scientific article (Ergnomics, 1995: 2107-2117) reported the accompanying data on lateral rangeof motion (in degrees) for a sample of workers with no history of low back pain and another sample with a history of low back pain.a) Perform the hypothesis test to determine if the type of lateral movement in degrees is affected by the pre-existing condition with a 95% confidence level.b) Calculate a 90% confidence interval for the difference between the mean degree of lateral movement of the population for the two conditions.The interval suggests that the mean lateral movement differs in the two conditions?Does the interval suggest that the mean lateral movement differs in the two conditions? Is the message different if a 95% confidence interval is used?Note:The exercise in the image is the original, it is in Spanish, but it is easy to understand. 1. El dolor de espalda baja (DEB) es un serio problema de salud en muchos entornos industriales.El artículo científico (Ergnomics, 1995: 2107-2117) reportó los datos adjuntos sobre rango lateralde movimiento (en grados) para una muestra de trabajadores sin antecedentes de dolor deespalda baja y otra muestra con antecedentes de esta dolencia.Tamaño de MediaDECondiciónmuestra muestral muestralSin DEB (dolor espalda baja)2891.55.5Con DEB3188.37.8a) Haga la prueba de hipótesis para determinar si el tipo de movimiento lateral en grados esafectado por la condición pre existente con un grado de confianza de 95%.b) Calcule un intervalo de confianza de 90% para la diferencia entre el grado de movimientolateral medio de la población para las dos condiciones. ¿El intervalo sugiere que elmovimiento lateral medio difiere en las dos condiciones? ¿Es diferente el mensaje si se utilizaun intervalo de confianza de 95%?

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Answered: El dolor de espalda baja (DEB) es un…

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

Low back pain (LBP) is a serious health problem in many industrial settings.
The scientific article (Ergnomics, 1995: 2107-2117) reported the accompanying data on lateral range
of motion (in degrees) for a sample of workers with no history of low back pain and another sample with a history of low back pain.

a) Perform the hypothesis test to determine if the type of lateral movement in degrees is affected by the pre-existing condition with a 95% confidence level.

b) Calculate a 90% confidence interval for the difference between the mean degree of lateral movement of the population for the two conditions.
The interval suggests that the mean lateral movement differs in the two conditions?
Does the interval suggest that the mean lateral movement differs in the two conditions? Is the message different if a 95% confidence interval is used?

Note:
The exercise in the image is the original, it is in Spanish, but it is easy to understand.