Aset of 10 scores has ss = 90. if the scores are a sample, the sample variance is and if the scores are a population, the population variance is

Aswimming pool is a rectangle with semicircles on the end. the rectangle is 12 meters wide and 30 meters long. the diameter and width of the swimming pool are equal. sketch and label an overhead diagram of the swimming pool. find the area of the swimming pool floor.