CASCALC89 COMMAND · NOT ON THE TI-89
zInterval_2Prop
Computes a z confidence interval for the difference of two proportions. The results are stored in stat variables such as stat.CUpper.
Syntax
zInterval_2Prop x1,n1,x2,n2[,CLevel]
- Group
- Statistics
- Arguments
- Takes successes and sample size of both samples and an optional confidence level.
- Availability
- Included
- Origin
- TI-Nspire CAS style command; the TI-89 Titanium handheld does not have it
Example
| Input | Result |
|---|---|
| zInterval_2Prop 12,40,15,40,0.95:stat.CUpper | 0.131582202975 |
Typing zInterval_2Prop 12,40,15,40,0.95:stat.CUpper on the home screen and pressing ENTER returns 0.131582202975.
Related commands
- zInterval_2SampComputes a z confidence interval for the difference of two population means with known σ.
- zTestPerforms a one sample z test on a population mean when σ is known.
- zTest_1PropPerforms a one proportion z test.
- zTest_2PropPerforms a two proportion z test that compares two population proportions.
- zTest_2SampPerforms a two sample z test on the difference of two population means with known σ.
- χ²2wayPerforms a χ² test for association on a two way table of observed counts; it is the same command as chi22way.
- χ²GOFPerforms a χ² goodness of fit test that compares observed counts with expected counts; it is the same command as chi2GOF.
- ANOVAPerforms a one way analysis of variance to compare the means of several groups.