Casio FX-9860G u 1-Sample t Test

6-5-11 Tests

u 1-Sample t Test

This test uses the hypothesis test for a single unknown population mean when the population standard deviation is unknown. The 1-Samplet Test is applied to t-distribution.

t =	o – μ0			x¯	: mean of sample
		σ		μ0	: assumed population mean
		x n–1		xσn-1 : sample standard deviation
			n
				n	: size of sample

Perform the following key operations from the statistical data list.

3(TEST)

2(t)

1(1-S)

The following shows the meaning of each item in the case of list data specification.

Data..............................	data type
μ ..................................	population mean value test conditions (“G μ0” specifies two-
	tail test, “< μ0” specifies lower one-tail test, “> μ0” specifies
	upper one-tail test.)
μ0 .................................	assumed population mean
List ...............................	list whose contents you want to use as data (List 1 to 26)
Freq ..............................	frequency (1 or List 1 to 26)
Save Res......................	list for storage of calculation results (None or List 1 to 26)
Execute ........................	executes a calculation or draws a graph

The following shows the meaning of parameter data specification items that are different from list data specification.

x¯ ..................................	mean of sample
xσn-1 .............................	sample standard deviation (xσn-1> 0)
n ..................................	size of sample (positive integer)

After setting all the parameters, use c to move the highlighting to “Execute” and then press one of the function keys shown below to perform the calculation or draw the graph.

• 1(CALC) ... Performs the calculation.

• 6(DRAW) ... Draws the graph.

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