279Perform the following key operations from the statistical result screen.J(To data input screen)cccccc(To Execute line)6(DRAW)uuuuu2-Sample Z TestThis test is used when the sample standard deviations for two populations areknown to test the hypothesis. The 2-Sample Z Test is applied to the normaldistribution.Z = o1 – o2σn112σn222+o1 : sample 1 meano2 : sample 2 meanσ1 : population standard deviation of sample 1σ2 : population standard deviation of sample 2n1 : sample 1 sizen2 : sample 2 sizePerform the following key operations from the statistical data list.3(TEST)1(Z)2(2-S)The following shows the meaning of each item in the case of list data specification.Data ................ data typeμ1 .................... population mean value test conditions (“Gμ 2” specifies two-tail test, “<μ2 ” specifies one-tail test where sample 1 issmaller than sample 2, “>μ2 ” specifies one-tail test wheresample 1 is greater than sample 2.)σ1 .................... population standard deviation of sample 1 (σ1 > 0)σ2 .................... population standard deviation of sample 2 (σ2 > 0)List1 ................ list whose contents you want to use as sample 1 dataList2 ................ list whose contents you want to use as sample 2 dataFreq1 .............. frequency of sample 1Freq2 .............. frequency of sample 2Execute .......... executes a calculation or draws a graphTests 18 - 6Downloaded from www.Manualslib.com manuals search engine
