The Whitehawk Indian Tribe wants to know the average number of absences for each student at the elementary school run by the Bureau ofIndian Affairs (BIA). The tribe members believe that the number of absences is at least 12 per student. A sample of 150 students reveals x = 11.8 5 = 4.3 What can you tell from this information about the Whitehawk hypothesis?

1. State Ho and Ha formally and in "English" (e.g. Ho: u = 20 Ha: u <> 20; Ho: The average (variable name) is 20 Ha: The average "variable name" is NOT 20)
2. Show the math
3. Reject or retain the Ho at a = .05; provide the "critical t" value at that level
4. Make all tests and hypotheses two-tail REGARDLESS of a question about direction
5. Explain the findings