Ten samples were taken from a plating bath used in an electronics manufacturing process, and the bath pH was determined. The sample pH value are 7.91, 7.85, 6.82, 8.01, 7.46, 6.95, 7.05, 7.35, 7.25, 7.42. Manufacturing engineering believes that pH has a median value of 7.0. Do the sample data indicate that this statement is correct? Use the sign test with a = 0.05 to investigate this hypothesis. Calculate the observed number of plus differences. r* i Calculate the P-value using the binomial distribution and r*.P-value = i (Express the results to 3 significant digits.) Họ : = 7.0 versus H1 : i # 7.0 Conclusion: Do not reject null hypothesis Statistical Tables and Charts