Normal Probability Z Table

1. Find the area under the standard normal curve between z = 0 and z = 3

• 0.4987

• 1.4987

• 0.9987

• 0.5000

How will you describe this graph?

• The shaded region of the normal curve is above the z = -1      

• The shaded region of the normal curve is between z = 0 and z = 1      

• The shaded region of the normal curve is below the z = 1     

• The shaded region of the normal curve is between z = -1 and z = 1

Determine the value of z-score if raw score x = 52; μ = 44 and σ = 6

• 1.32

• 1.33

• 1.34

• 1.35

1. Given: z = 2.25; μ = 70 and σ = 9. Find the value of x.

• -49.75

• 90.25

• 35.11

• 148.5

Which of the following notations indicate the probability at the left of z?

• P(𝑍 > 𝑧)

• P(X < x)

• P(𝑍 < 𝑧)

• P(𝑋 > x)

What is the probability of z value indicated by 𝑃(𝑍 < −1.78)?

• 0.9625

• 0.3075

• 0.0375

• 0.9633

1. Find the probability value of P(Z< -1.0) and sketch the graph/curve.   

• 34.13%

• 84.13%

• 15.87%

• 90.13%

Which part of the normal curve is extended indefinitely in both directions along the horizontal axis, approaching but never touching it?

• center

• top

• tail

• spread

Suppose the provincial health officer of Rizal reported that the average COVID19 positive for 40 days is 20 patients with the standard deviation of 8 patients. What is the z score of 35 patients?

• 1.88

• 1.89

• 1.90

• 1.86

What is the probability that a score is above (right of) 2.37?

• .0116

• .0089

• .0068

• .0051