rL8Pack*?8 @EACTEACT1fāPTЁ DHl04h$\x======060608 =======vt Interval 1-Sample t Interval 1-Sample t Interval calculates the confidence interval for an unknown population mean when the population standard deviation is unknown. 1-The following is the confidence interval. @ is the level of significance. The value 100 (1@)% is the confidence level. Left=™(t(@2)xQn) Right=‰(t(@2)xQn) |@STAT[EXE]8Pack*?( @GUIDETKEYLOG((NOTEP'%$222222xz|The following shows the meaning of each item in the case of list data specification. Data ..... data type C-Level .. confidence level (0C-Level<1) List ..... list whose contents you want to use as sample data (List1 to 26) Freq ..... sample frequency (1 or List1 to 26) Save Res . list for storage of calculation results (None or List1 to 26) Execute .. executes a calculation The following shows the meaning of parameter data specification items that are different from list data specification. ..... mean of sample xQ .. sample standard deviation (xQ0)n ..... size of sample (positive integer) @STAT[EXE]48Pack*?( @GUIDEKEYLOG(NOTE '%$$2 $2$22$xz Left ... confidence interval lower limit (left edge) Right .. confidence interval upper limit (right edge) ...... mean of sample xQ ... sample standard deviation n ...... size of sample