p0 : x : n :

7-9-6 Tests

Definition of Terms

Prop condition : sample proportion test condition (“≠” specifies two-tail test, “<” specifies lower one-tail test, “>” specifies upper one-tail test.) expected sample proportion (0 < p0 < 1)

sample value (integer, x >0) sample size (positive integer)

Calculation Result Output

Prop≠0.5 : test condition

z:

z value

p:

p-value

pˆ :

estimated sample proportion

n:

sample size

Example

Data : 13

Sample size : 100

Expected proportion : 20%

•Statistics Wizard Operation

(1)On the menu bar, tap [Calc] and then [Test].

(2)Select [One-Prop ZTest] and then tap [Next >>].

(3)Select Prop condition [≠] and input values.

(4)Tap [Next >>].

(5)To display the graph, tap $.

uProgram, eActivity or Main Application

Command: OnePropZTest

Command Syntax

“Prop condition”, p0 value, x value, n value

Input Example:

OnePropZTest “≠”,0.2,13,100

2-Prop Z Test

Menu: [Test]-[Two-Prop ZTest]

Description: This command compares the proportion of successes for two populations. A 2-Prop Z Test is used for normal distribution.

 

 

x1 —

x2

 

 

x1

: data value of sample 1

Z =

 

n1

 

n2

 

 

x2

: data value of sample 2

 

 

 

 

 

 

 

 

n1

: size of sample 1

 

 

p(1— p )

 

1

+

1

 

 

 

 

 

n1

n2

n2

: size of sample 2

 

 

 

 

 

 

 

 

ˆp

: estimated sample proportion

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