55. All of the following conditions are required for using the least squares technique for estimating the regression equation EXCEPT: (A) The error terms are uniformly distributed. (B) The error terms are independent. (C) The standard deviation of the error term is constant. (D) The mean of the error term is 0. 56. Which of the following would a company use to identify and remove defects and reduce variability in manufacturing? (A) Six Sigma (B) Simplex (C) PERT/CPM (D) Just-in-time (JIT) (D) JUSL-111- C 1 57. In statistical hypothesis testing, which of the following is true? (A) The alternative hypothesis is assumed to be true. (B) The level of significance specifies the maximum allowable probability of a Type I error. (C) Power is equivalent to the probability of rejecting the null hypothesis given that the null hypothesis is true. (D) The standard error of the mean increases as the sample size increases