jawaher95 jawaher95

22-11-2020
Mathematics

contestada

What is the data value X if its z value is
-2 ,the mean is 27
and the standard deviation is 4

Respuesta :

miaisalpha miaisalpha

22-11-2020

The formula for this type of question is z=x-u/y
z=-2 (z-value)
u = 27 (mean)
y = 4 (standard deviation)

Therefore -2=x-27/4
You now figure this out like a normal equation

4x-2=4 X x-27/4
-8+27= x-27+27
19=x

Therefore the data value of x is 19

Answer Link

Otras preguntas

What´s the difference between Black Thursday and Black Tuesday?

Two snails in the same class must also be in the same (A) order. (B) species. (C) genus. (D) family. (E) phylum

If two parents that are heterozygous (Aa) at a single locus give rise to offspring that are 25 percent AA, 50 percent Aa, and 25 percent aa, then all of the fol

how do u do these equations?

What is the dating process that doesn't exactly identifies the age of a rock?

if you were Orpheus, would you have locked back? why or why not?

mr knote a piano tuner taps his 440-hz tunning fork with a mallet. what is the period of the vibrating fork?

solve 7x²+8x+1=0 using quadratic formula

name of 4 men who were called"The Empire Builders" of the California Railroad system?

what is 65% written as a fraction in simpliest form.