Confidence Interval Command List - Casio ClassPad 330 User Manual

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Confidence Interval Command List

Z
Confidence Interval
k
Z
1-Sample
Interval
Menu:
���������������������� �����
���������������������� �����
Description: This co����d ob��i�s �h� co�fid��c� i������� fo� �h� �o�u���io� ���� wh��
�h� �o�u���io� s���d��d d��i��io� is k�ow�.
Th� co�fid��c� i������� is ob��i��d usi�g �h� fo��owi�g �x���ssio�s.
α is �h� sig�ific��c� �����, ��d 100 (1 – α)% is �h� co�fid��c� �����. Wh�� �h�
co�fid��c� ����� is 95%, fo� �x�����, you wou�d i��u� 0.95, which ��oduc�s
α = 1 – 0.95 = 0.05.
Definition of Terms
C�L���� : co�fid��c� ����� (0 < C�L���� < 1)
σ :
Lis� :
F��q :
:
o
n
:
Calculation Result Output
L�f� :
Righ� :
:
o
x
σ
:
n
–1
n
:
Example 1 (c��cu���io� wi�h �is�)
�is�1 : { 299.4, 297.7, 301, 298.9, 300.2, 297 }
Po�u���io� s���d��d d��i��io� : 3
�ig�ific��c� ����� : 5% ( = co�fid��c� ����� : 95%)
• Statistics Wizard Operation
(1) ���u� �h� d��� i��o ��is�1� i� �h� ���� Edi�o�.
(2) �� �h� ���u b��, ��� �C��c� ��d �h�� ����������.
(3) ����c� ����������� ����� ��d �Lis��, ��d �h�� ���
�N�x� >>�.
(4) ���u� ���u�s.
(5) ����c� Lis� ��is�1� ��d F��q �1�.
(6) T�� �N�x� >>�.
7-10-2
Confidence Intervals
���������� �����
������� �����
������ �����
�����
����� �
σ
Left = o – Z α
n
2
Right = o + Z α
σ
n
2
�o�u���io� s���d��d d��i��io� ( σ > 0)
�is� wh��� s����� d��� is �oc���d
f��qu��cy of s����� (1 o� �is� ����)
s����� ����
s����� siz� (�osi�i�� i���g��)
i������� �ow�� �i�i� (��f� �dg�)
i������� u���� �i�i� (�igh� �dg�)
s����� ����
s����� s���d��d d��i��io� (Dis���y�d o��y fo� �is� fo����.)
s����� siz�
20070301
20060301

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