In a completely randomized experimental design involving four treatments, 20 observations were recorded for each of the four treatments. The following information is provided: sstr = 154 and sst = 342. What does the sum of squares within treatments (sse) equal?.

17 a tourist was planning a trip by car for travelling at some constant speed for 2.5 hours. however, he found that if he increases the speed by 20 km/h he can cover the same distance in 30 minutes less time than it was planned. what was the planned speed of the tourist, in km/h?