Casio fx-9750G PLUS Programma-handleiding - Pagina 6

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Program for

Description

The mean (sample mean) and sample standard deviation can be used to obtain a

value.

(x – m)

t =

Example

To determine whether the population standard deviation for sample data 55, 54, 51,

55, 53, 53, 54, 52, is 53.

Perform a

Preparation and operation

• Store the program written on the next page.

• Execute the program as shown below.

Step Key operation

The above operation produces a t-test value of t(53) = 0.7533708035. According to the t-distribution

table in the next page, a level of significance of 5% and a degree of freedom of 7 (

produce a two-sided t-test value of approximately 2.365. Since the calculated t-test value is lower

than the table value, the hypothesis that population mean

416

PROGRAM SHEET

-Test Value

: mean of

: sample standard deviation of

–1

n–

: number of data items

: hypothetical population standard deviation (normally

represented by µ , but

name limitations)

-test with a level of significance of 5%.

Display

data

is used here because of variable

Step Key operation

equals 53 is accepted.

No.

-test

data

Display

– 1 = 8 – 1 = 7)