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Post-Test in Module 2: Normal Distribution

Total questions: 15

Worksheet time: 11mins

Name
Class
Date
1.

Which of the following is the area under the normal curve?

a)

0

b)

1

c)

2

d)

3

2.

The curve is symmetrical to which of the following?

a)

mean

b)

variance

c)

standard deviation

d)

area

3.

If the z-value is 0.42, what is the area?

a)

0.0800

b)

0.0279

c)

0.1628

d)

0.3129

4.

Find the area if the value of z = -0.13.

a)

0.0248

b)

0.0517

c)

0.1398

d)

0.2467

5.

If the area is 0.4977, what is the z-value?

a)

1.63

b)

1.97

c)

2.01

d)

2.83

6.

Find the area between z=-1 and z=3.

a)

0.8300

b)

0.8350

c)

0.8400

d)

0.8450

7.

Find the area between z= -1.5 and z=-1.3.

a)

0.0100

b)

0.0200

c)

0.0300

d)

0.0400

8.

If the area is 0.8351, what are the two values of z.

a)

z=0.24 and z=0.31

b)

z=1.6 and z=2.1

c)

z=-0.13 and z=-1.3

d)

z=-2.5 and z=1

9.

Find the area of the proportion in the probability notation P(1< z <3).

a)

0.1573

b)

0.1574

c)

0.1575

d)

0.1576

10.

Solve for the proportion of the area of the probability notation P(z >1).

a)

0.1585

b)

0.1586

c)

0.1587

d)

0.1588

11.

Find the area of the proportion in the probability notation P(z > - 2.5).

a)

0.9937

b)

0.9934

c)

0.9936

d)

0.9938

12.

Given mean = 180 and standard deviation = 15 in a college entrance examination, find the

corresponding z-value of the score by the following students if x = 150.

a)

2

b)

-2

c)

2.5

d)

-2.5

13.

Given mean = 180 and standard deviation = 15 in a college entrance examination, find the

corresponding z-value of the score by the following students if x = 200.

a)

1.33

b)

1.66

c)

1.99

d)

2.22

14.

What is the value of 70th percentile?

a)

0.13

b)

0.23

c)

0.52

d)

0.71

15.

What is the value of 82nd percentile?

a)

0.92

b)

0.83

c)

0.53

d)

0.23