Which is greater -9/6 or 3/-2
-3/5 or -0.666...
-13/10 or -(-13/-10)
-3.25 or -16/5
-18/12 or -11/15
-17/6 or -23/8

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%