Sharp EL9900C EL-9900C - Page 181
Ztest1samp, Example
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Chapter 10: Statistics & Regression Calculations 1. Enter the above data in to lists L1 and L2. 2. Press S E 0 7. The parameter input screen will appear. 3. Enter the appropriate value in each field. 4. Press @ h. Answers are displayed on the screen, where the numerical value within () indicates the confidence interval for the differences between µ1 and µ2 when the level of confidence is 99%. In the numerical value input mode, "n1", "n2" are positive integers. 08 Ztest1samp Tests the hypothesis of population mean µ. Example The average weight of a newly developed product is known to be 53.4 g and standard deviation (σ) is 4.5. Judge the validity when the average weight of 20 units is 52.4 g (x). Set the input method to value input mode 1. Press # S E 1 7 E. 2. Press S E 0 8. The parameter input screen will appear. 3. Set the alternate hypothesis to µ ≠ µ0, µ < µ0 and µ > µ0 (two-tail test, one-tail test settings). In this case, choose µ ≠ µ0 (two-tail test). 171