Casio ALGEBRA FX2.0 Advanced Statistics Examples 2 Manuel d'utilisateur télécharger pdf (Page 2)

27

examples

Example In a random sample of size n = 20 from a normal population

with the standard deviation

σ

= 15 and the mean

oo

oo

o = 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

.jfw

bfw

ge.dw

caw

1(None)c

4 1(CALC)

Result Screen

Thus, the 95% confidence interval for

µ

becomes 57.7<

µ

<70.9 .

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