282The following key operations can be used to draw a graph.Jcccc6(DRAW)uuuuu2-Prop Z TestThis test is used to compare the proportion of successes. The 2-Prop Z Test isapplied to the normal distribution.Z = n 1x 1n 2x 2–p(1 – p ) n 11n 21+x1 : sample 1 data valuex2 : sample 2 data valuen1 : sample 1 sizen2 : sample 2 sizeˆp : estimated sample proportionPerform the following key operations from the statistical data list.3(TEST)1(Z)4(2-P)p 1 .................... sample proportion test conditions (“G p 2 ” specifies two-tailtest, “< p2 ” specifies one-tail test where sample 1 is smallerthan sample 2, “> p 2” specifies one-tail test where sample 1is greater than sample 2.)x 1 .................... sample 1 data value (x1 > 0 integer)n 1 .................... sample 1 size (positive integer)x 2 .................... sample 2 data value (x2 > 0 integer)n 2 .................... sample 2 size (positive integer)Execute .......... executes a calculation or draws a graphExample To perform a p 1 > p2 2-Prop Z Test for expected sampleproportions, data values, and sample sizesPerform a p 1 > p2 test using: x1 = 225, n 1 = 300, x 2 = 230, n2 = 300.18 - 6 TestsDownloaded from www.Manualslib.com manuals search engine
