avacaulder03
contestada

If a normal distribution has a mean of 44 and a standard deviation of 8, what
is the z-score for a value of 54?
O A. 1.25
O B. 0.75
O c. 1.75
D. 0.25
SUBMIT

Respuesta :

LammettHash

We're looking for z such that 54 is equal to some multiple of the standard deviation, 8z, plus the given mean.

54 = 8z + 44

Solve for z :

z = (54 - 44)/8 = 10/8 = 5/4 = 1.25