jackphilander2199 jackphilander2199

26-12-2017
Mathematics

contestada

A given distribution has a mean of 50. a score of 43 has a corresponding z-score of l.94. what is the standard deviation (to the nearest hundredth)?

Respuesta :

anchitthawi anchitthawi

02-01-2018

z= x-u / sd

u= mean = 50
x = score = 43
z= 1.94

so
1.94 = 43-50 /sd
1.94 = -7sd
so 1 sd = 1.94/ -7 = -3.6

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