# P value (stats)

1. Oct 17, 2007

### Punchlinegirl

1. The problem statement, all variables and given/known data

Measurements o the percentage of enrichment of 12 fuel rods used in a nuclear reactor were reported with a sample mean of 3.26. Test the hypothesis H_0: $$\mu$$=2.95 versus H_1: $$\mu\neq$$2.95, and draw appropriate conclusions. Use the p-value approach.

2. Relevant equations

3. The attempt at a solution

I honestly don't know where to begin since the variance is unknown. Can someone help me out?