Refer to this table of results of the indianapolis 500 in which drivers competed in the 500-mile race. to the nearest mile per hour, how much faster was the average winning speed in 2004 than in 1911?

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%