1. 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 in Table 3. Table 3 Source Sum of Degree of Mean 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. ( 14) (b) Conduct a hypothesis test to test whether all treatment groups have the same mean using a 5% level of significance. (6) ( Total / Jumlah: 20)