Drawn from Different Population: Sample Size>30 Sigma Population not known
Population variance for plant A and Plant B not known
This is a test for difference of two means obtained from different populations
- Null Hypothesis H0: µA = µB
- Alternative Hypothesis H1: µA ≠ µB
- µA: Mean of product obtained from Plant A = 75.4
- µB: Mean of product obtained from Plant B = 74.3
- Sample Size of product1 =300
- Sample size of product2 = 200
- Test significance level = 5%
- Z-table for 0.05 = 1.96 (two-tailed test)
- Z Calculated value must be greater than Z-table value to reject the Null hypothesis
