robtodd4248 robtodd4248

19-06-2017
Mathematics

contestada

The average score on an aptitude test is 80 with a standard deviation of 10. one person scored a 100. what is that person's z-score?

Respuesta :

mathmate mathmate

27-06-2017

Z-score for a variable X is calculated using
Z(x)=(x-mean)/standard deviation.
Here
mean=80
standard deviation=10
x=100
Z(100)=(100-80)/10=20/10=2

Answer Link

Otras preguntas

Define personal health.

help me pls i need help

A square plot is 14 meters long.Find its area?

what is the equation of the line that passes through the point (-2,0) and has a slope of -2?

In the figure below, points P, Q, and R are on a straight line. Angle RQV and Angle VQT are complementary. What is the measure of Angle PQS? answer options 25 d

How did the economics of Reconstruction negatively impact African Americans?

Tengo que resolver con procedimiento 1. Un automóvil viaja a una velocidad de 100 Km/h durante dos horas. Calcular la distancia recorrida.2. Un automóvil viaja

If [tex] \frac{3 + \sqrt{2} }{3 - \sqrt{2} } [/tex]=a+b×[tex] \sqrt{2} [/tex], find the values of a and b.With Full Workings.Please hurry!

1 . Complete the phrase with the correct pronoun and verb. A ella __(blank 1)__ __(blank 2)__ la comida.

helppppp!!!!!!!!!!!!!!!