Problem 4.7:

Answer the problem using statistics tool (preferably excel ANOVA)

Five samples for each of three batches of oil from the same raw material supplier. Samples were drawn to determine if the viscosity was the same for each batch. Using the ANOVA method at 0.05 significance level, test if the viscosities are the same regardless of the batch.

Batch A	Batch B	Batch C
10.23	10.24	10.25
10.33	10.28	10.20
10.28	10.20	10.21
10.27	10.21	10.18
10.30	10.26	10.22