A subset of a study to measure fish species and characteristics in Finland's Lake Laengel- maevesi was analyzed. There are 3 major species (bream, roach, and perch) in the lake and a total of 90 fish (30 each) were measured. For every fish, the weight, length, width, and height are tallied. Three different length measurements are recorded (length1, length2, and length3). Suppose we want to evaluate the mean vector of length1, length2, and length3 for the three species