Sharp EL9900C EL-9900C - Page 180
Tint1samp, Example, Tint2samp
UPC - 074000016873
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Chapter 10: Statistics & Regression Calculations 06 Tint1samp Finds the confidence interval for the population mean µ. 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. The parameter input screen will appear. 3. Enter the C-level value of 0.99. 4. Set the List to L1 and press E. 5. Press @ h. 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. 07 Tint2samp Finds the confidence interval for the difference of two sample means, µ1 and µ2. 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. 170