The probability found by observing that there are two possible outcomes when tossing a coin and assuming that heads or tails will occur randomly is considered what kind of probability?

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%