Casio STAT 2 Manual page 95

k k k k k 2-Prop Z Interval
Set Up
1. On the icon menu, select STAT2.
Execution
2. 4(INTR)b(Z)e(2-Prop)... 2-Prop Z Interval
3. Set calculation parameters.
4. Align the cursor with [Execute]
1(CALC) ... Performs calculation.
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examples