Casio fx-9750G PLUS - Manual (Page 309)

281
u u u u u 1-Prop Z Test
This test is used to test for an unknown proportion of successes. The 1-Prop Z
Test is applied to the normal distribution.
Z = n
x
n
p
0
(1– p
0
)
– p
0
p
0
: expected sample proportion
n : sample size
Perform the following key operations from the statistical data list.
3 (TEST)
1 (Z)
3 (1-P)
Prop ................ sample proportion test conditions (“G p
0
” specifies two-tail
test, “< p
0
” specifies lower one-tail test, “> p
0
” specifies upper
one-tail test.)
p
0
.................... expected sample proportion (0 < p
0
< 1)
x ..................... sample value ( x > 0 integer)
n ..................... sample size (positive integer)
Execute .......... executes a calculation or draws a graph
Example To perform a 1-Prop Z Test for specific expected sample
proportion, data value, and sample size
Perform the calculation using: p
0
= 0.5, x = 2048, n = 4040.
1 (G)c
a.fw
caeiw
eaeaw
1 (CALC)
PropG0.5 ........ direction of test
z ...................... z value
p ...................... p-value
ˆp ...................... estimated sample proportion
n ...................... sample size
Tests
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