TI-83 Plus Inferential Statistics and Distributions 396
Z.Test
Z.Test (one-sample z test; item 1) performs a hypothesis test for a single
unknown population mean m when the population standard deviation
s
is
known. It tests the null hypothesis H0: m=m0 against one of the
alternatives below.
• Ha: mƒm0 (m:ƒm0)
• Ha: m<m0 (m:<m0)
• Ha: m>m0 (m:>m0)
In the example:
L1={299.4 297.7 301 298.9 300.2 297}
Data Stats
Input:
,,