INTERVALOS DE CONFIANZA

INTERVALOS DE CONFIANZA
Operación 1
=1.265
µ= 70.3
n=50
95% CONFIANZA

α=1-p
α=1-0.95=0.05
Zα/2 = Z 0.05/2= Z 0.025
µ-Zα/2 (σ/(n)1/2 )<µ< µ+Zα/2 (σ/(n)1/2)
70.3-(1.960*(1.265/(50)1/2 = 69.95
70.3+(1.960*(1.265/(50)1/2 =70.65

69.95
µ=70.3
70.65


Operación 2
=1.072
µ= 107.56
n=50
95% CONFIANZA

α=1-pα=1-0.95=0.05
Zα/2 = Z 0.05/2= Z 0.025
µ-Zα/2 (σ/(n)1/2 )<µ< µ+Zα/2 (σ/(n)1/2 )
107.56-(1.960*(1.072/(50)1/2 = 107.26
107.56+(1.960*(1.072/(50)1/2 =107.86

107.26
µ=703107.86







µ=70.3

µ=69.95 µ=70.65



µ=107.56

µ=107.26µ=107.86






Operación 3
=1.121
µ= 74.26
n=50
95% CONFIANZA

α=1-p
α=1-0.95=0.05
Zα/2 = Z 0.05/2= Z 0.025
µ-Zα/2 (σ/(n)1/2 ) <µ< µ+Zα/2 (σ/(n)1/2 )
74.26-(1.960*(1.121/(50)1/2= 73.94
74.26+(1.960*(1.121/(50)1/2 =74.57

73.94
µ=74.26
74.57



Operación 4

=0.985
µ= 119.26
n=50
95% CONFIANZA

α=1-p
α=1-0.95=0.05
Zα/2 = Z 0.05/2= Z0.025
µ-Zα/2 (σ/(n)1/2 ) <µ< µ+Zα/2 (σ/(n)1/2 )
119.26-(1.960*(0.985/(50)1/2 = 118.99
119.26+(1.960*(0.985/(50)1/2 =119.53

118.99
µ=119.26
119.53µ=74.26

µ=73.94 µ=74.57




µ=119.26

µ=118.99µ=119.53






Operación 5
=1.09
µ= 24.94
n=50
95% CONFIANZA

α=1-p
α=1-0.95=0.05
Zα/2 = Z 0.05/2= Z 0.025
µ-Zα/2 (σ/(n)1/2 ) <µ<µ+Zα/2 (σ/(n)1/2 )
24.94-(1.960*(1.09/(50)1/2 = 24.63
24.94+(1.960*(1.09/(50)1/2 =25.24

24.63
µ=24.94
25.24


Estamos 95% confiados de que los...