Three different methods for assembling a product were proposed by an industrial engineer. To investigate the number of units assembled correctly with each method, 30 employees were randomly selected and randomly assigned to the three proposed methods in such a way that each method was used by 10 workers. The number of units assembled correctly was recorded, and the analysis of variance procedure was applied to the resulting data set. The following results were obtained: SST= 10,800; SSTR=4560. What is the value of MSTR? QUESTION 2 What is the value of MSE? QUESTION 3 What is the value of F-calculated? QUESTION 4 Use a =.05 to test for any significant difference in the means for the three assembly methods. What is the value of the F-critical? QUESTION 5 What is your conclusion? O a. Fail to reject the null, all the means of the assembly methods are comparable b. Fail to reject the null, the means of the assembly methods are equal. OC Reject the null. all the means of the assembly methods are different d. Reject the null, at least one of the means of the assembly methods is different