When the statistics exam is handed back, you are curious about many people in your class got an a (raw score greater than 78 points). the class mean was 72.5 and the standard deviation was 4.3. what proportion of the class scored higher than 78?

Saline iv fluid bags cost $64.20 for 24, 1000 ml bags from one supplier. a new supplier sells 500 ml bags for $2 each. the hospital uses about 10,000, 1000 ml bags each month. nurses report that about half of the bags are more than half full when they are discarded. if you are going to use only one supplier, which size bag provides the best deal, and how much will you save each month? compare the cost of the new supplier to the current one.

Vinay constructed this spinner based on the population of teachers at his school according to vinays model what is the probability that he will have a male history teacher two years in a row

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30