Casio FX 1.0 PLUS, FX 2.0, FX 2.0 PLUS k t Interval, u 1-Sample t Interval

	1-3-8
	Confidence Interval (INTR)
Left ..............................	interval lower limit (left edge)
Right ............................	interval upper limit (right edge)
ˆp1 .................................	estimated sample propotion for sample 1
ˆp2 .................................	estimated sample propotion for sample 2
n1 .................................	size of sample 1
n2 .................................	size of sample 2

k t Interval

u 1-Sample t Interval

1-Samplet Interval calculates the confidence interval for an unknown population mean when the population standard deviation is unknown.

The following is the confidence interval. The value 100 (1 – α) % is the confidence level.

Left = o– tn – 1	α xσn–1
			n
2
Right = o+ tn – 1		α xσn–1
		2
				n

Perform the following key operations from the statistical data list.

4(INTR)

c(T)

b(1-Smpl)

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

Data ............................	data type
C-Level ........................	confidence level (0 <C-Level < 1)
List ..............................	list whose contents you want to use as sample data
	(List 1 to 20)
Freq .............................	sample frequency (1 or List 1 to 20)
Save Res .....................	list for storage of calculation results (None or List 1 to 20)
Execute .......................	executes a calculation

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

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