Sharp EL-9900 Operation Manual page 183

10 Ztest1prop Tests the success probability P
Example
A coin was tossed 100 times and landed head side up 42 times.
Normally, the probability of head facing up is 0.5. Test to see if the
coin is fair.
1. Press S E 1 0.
2. Enter the appropriate value
3. Press @ h.
11 Ztest2prop Executes a comparative test for two success probabilities, (P
P
Example
Test the equality of P
16 and n
1. Press S E 1 1.
2. Enter the appropriate value
Chapter 10: Statistics & Regression Calculations
The parameter input screen will appear.
• prop is the hypothesis probability. The test will be conducted
using hypothesis prop ≠ P
• x is the number of successes observed and n is the number
of trials (where n is a positive integer.)
into each field.
p ^ : Success probability
obtained from the sample
data.
).
2
= 20, x = 5, where the hypothesis is P
2 2
The parameter input screen will appear.
into each field.
of a population.
0
.
0
and P given the sample data n
1 2
,
1
= 50, x =
1 1
< P .
1 2
173