Discussion:
Hypothesis Testing for Proportions.
Q. A flash drive manufacturer has set a standard on their production process. When defects exceed 3%, the production process is unacceptable. A random sample of 85 drives is tested. The defective rate is 5.9%. Use a level of significance of α = 0.01 to test to see if you have sufficient evidence to support the claim that the defective rate exceeds 3%.
1. H0 :
Ha :
2. α =
3. Test statistics:
4. P-value or critical z0 or t0.
5. Rejection Region:
6. Decision:
7. Interpretation: