Casio fx-9860G AU α xσn–1, α xσn–1, k t Interval, Left = o– tn –, Right = o+ tn –, u 1-Sample t Interval

	6-6-8
	Confidence Interval
Left ..............................	confidence interval lower limit (left edge)
Right ............................	confidence 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 Intervalu 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. α is the level of significance. The value 100 (1 – α) % is the confidence level.

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

Perform the following key operations from the statistical data list.

4(INTR)

2(t)

1(1-S)

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 26)
Freq .............................	sample 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

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

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