A pharmaceutical company conducted a study to test the effect of a new high blood medication. The company selected 15 subjects from a population. Each subject was randomly assigned to one of three treatment groups equally (i.e. each group consists of five subjects): Group 1 (10mg/day), Group 2 (50mg/day) and Group 3 (100mg/day). After 30 days, doctors measured the blood pressure of each subject. Summary of Analysis of Variance table is shown Sum of Degree of Mean Source F Squares Freedom Square Treatments (i) (iv) 320 3.98 Error (ii) ( V ) (vii) Total (iii) (vi) (a) Calculate the value for (i)-(vii) from the above table. (b) Conduct a hypothesis test to test whether all treatment groups have the same mean using a 5% level of significance