Casio ALGEBRA FX2.0 Advanced Statistics Examples 2 - Manual (Page 2)

27
examples
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Example In a random sample of size n = 20 from a normal population
with the standard deviation
σ
= 15 and the mean ooooo = 64.3,
construct a 95% confidence interval for the population mean
µ
.
Procedure
1 m STAT2
2 4 (INTR) b (Z) b (1-Smpl)
3 2 (VAR) c
.jf w
bf w
ge.d w
ca w
1 (None) c
4 1 (CALC)
Result Screen
Thus, the 95% confidence interval for
µ
becomes 57.7<
µ
<70.9 .