Using Z-Table Practice

μ = 10 , σ = 5 , X = 12 . Find z-score

• 0.3
• 0.4
• 0.5
• 0.6

μ = 350 , σ = 20 ,
X = 400 . Find z-score

• 0.25
• 2.5
• -2.5
• -0.25

μ = 30 , σ = 5 , X = 25 . Find z-score

• 1
• -1
• 2
• -2

μ = 70 , σ = 8 , X = 50 . Find z score

• 2.5
• -2.5
• 5.2
• -5.2

X = 400 , μ = 350 ,

σ = 20 . Find P(X< 400 )

• 0.0062

• 0.9938

• 2.5

• -2.5

X = 25 , μ = 30 , σ = 5 . Find P( x ≤ 25 )

• 0.1587

• 0.8413

• 1

• -1

X = 68 , μ = 70 , σ = 10. Find P(X > 68 )

• 0.5793

• 0.4207

• 0.2

• -0.2

X = 57 , μ = 50 , σ = 8 . Find P(X > 57 )

• 0.1894

• -0.1894

• 0.3816

• 0.8092

X = 43.26 , μ = 50 ,

σ = 10 . Find P (X < 43.26 )

• 0.2514

• -0.2514

• 0.7498

• -0.7498

X = 34.7 , μ = 30 ,

σ = 8. Find P (X < 34.7 )

• 0.7224

• 0.2784

• 0.2218

• 0.5875