TAREA
TAREA
TAREA
Ubicando en la tabla
a)
0 1.25
0 1.25
c)
-1.25 0
18 20
Calculando 18 20 -0.6666667
-0.67 0
P ( -0.67 ≤ Z≤ 0 ) = P ( 0 ≤ Z≤ 0.67 )
a)
250
210 250
0 2.67
P ( 2.67 ≤ Z ) = 0.5 - P ( 0 ≤ Z≤ 2.67 )
P ( 2.67 ≤ Z ) = 0.0038
Probabilidad 0.38% Rpta
Datos
Media 210
Desviación estandar 15
b)
190.05 210
-1.33 0
P ( Z ≤ -1.33 ) = 0.5 - P ( 0 ≤ Z≤ 1.33 )
P ( Z ≤ -1.33 ) = 0.0918
Datos
Media 160 cm
Desviación estandar 2 cm
a)
-1 0 1.5
P ( -1 ≤ Z≤ 1.5 ) = P ( -1 ≤ Z≤ 0 ) + P ( 0 ≤ Z≤ 1.5 )
P ( -1 ≤ Z≤ 1.5 ) = P ( 0 ≤ Z≤ 1 ) + P ( 0 ≤ Z≤ 1.5 )
P ( -1 ≤ Z≤ 1.5 ) = 0.7745