Altitude above sea level is given in positive values and below sea level is given in negative values witch situation describes a hiker in Death Valley stopping at an altitude of 0 feet

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%