Pregunta: 1.A gunpowder manufacturer has developed a new gunpowder designed to produce a projectile muzzle velocity equal to 3000 ft/sec. 8 pistols were loaded with this new product to measure their respective muzzle velocities. The results were as follows measured in feet/second. 3005 2925

1.A gunpowder manufacturer has developed a new gunpowder designed to produce a projectile muzzle velocity equal to 3000 ft/sec. 8 pistols were loaded with this new product to measure their respective muzzle velocities. The results were as follows measured in feet/second.

s this data sufficient evidence to conclude, with alpha equals 0.05 , that the average muzzle velocity of the projectiles differs from 3000 ft/sec?

NOTE: Round to two decimal places the amounts that require it.

STUDENT-T TEST FOR THE MEAN
The mean is equal to: _________________________________
The Standard Deviation is equal to: ______________________________
The Alternate Hypothesis (Ha) is of (one or two) tail(s).: ______________________________
The Test Statistic is equal to: ______________________________
The degrees of freedom are: ______________________________
The critical point is more or less: ______________________________
The Null Hypothesis (Ho) is (accepted or rejected).: ______________________________

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1. Un manufacturero de pólvora ha desarrollado una nueva pólvora diseñada para producir una velocidad de salida de proyectiles igual a 3000 pies/segundo. Se cargaron 8 pistolas con este nuevo producto para medir sus respectivas velocidades de salida. Los resultados fueron los siguientes medidos en pies/segundo.

¿Constituye esta data suficiente evidencia para concluir, con alpha equals 0.05 , que la velocidad de salida promedio de los proyectiles difiere de 3000 pies/segundo?

NOTA: Redondee a dos lugares decimales las cantidades que así lo requieran..

PRUEBA STUDENT-T PARA LA MEDIA
La media es igual a : ______________________________
La Desviación Estándar es igual a : ______________________________
La Hipótesis alterna (Ha) es de (una o dos) cola(s).: ______________________________
El Estadístico de Prueba es igual a : ______________________________
Los Grados de Libertad son : ______________________________
El Punto Critico es mas o menos : ______________________________
La Hipótesis Nula (Ho) se (acepta o rechaza). : ______________________________