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Chapter 8: Statistics & Regression Calculations
Finds the confidence interval for the population mean µ.
06 Tint1samp
Example
Find the confidence interval for the statistical data of
{65.6, 62.8, 66.0, 64.5, 65.1, 65.3, 63.8, 64.2, 63.5, 64.4},
from a given population and the level of confidence is 0.99.
1. Enter the above statistical data into list L1.
2. Press S E 0 6.
3. Enter the C-level value of
4. Set the List to L1 and press
5. Press @ h .
07 Tint2samp
Finds the confidence interval for the difference of two sample
means, µ
Example
Use the following two sample data (used for example 04);
List 1 {2.37, 2.51, 2.43, 2.28, 2.46, 2.55, 2.49}
List 2 {2.63, 2.71, 2.56, 2.61, 2.55, 2.68, 2.42, 2.48, 2.51, 2.65},
with the level of confidence of 0.99.
172
The parameter input screen will appear.
0.99.
E.
Answers are displayed on the
screen, where sx indicates
the sample standard
deviation.
• If you enter a value from 1
to 100 for the C-level, it will be changed to the % input mode.
• In the numerical value input mode, n is a positive integer.
and µ
.
1
2
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