TI-83 Plus Inferential Statistics and Distributions 403
Calculated results:
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Drawn results:
2.PropZTest
2.PropZTest (two-proportion z test; item 6) computes a test to compare
the proportion of successes (p1 and p2) from two populations. It takes as
input the count of successes in each sample (x1 and x2) and the count of
observations in each sample (n1 and n2). 2.PropZTest tests the null
hypothesis H0: p1=p2 (using the pooled sample proportion Ç) against
one of the alternatives below.
• Ha: p1ƒp2 (p1:ƒp2)
• Ha: p1<p2 (p1:<p2)
• Ha: p1>p2 (p1:>p2)