in a quiz, a correct answer scores 3 and an incorrect answer scores - 1. Michael guesses all the answers. he has 2 correct answers and 8 incorrect answers. Work out his total.​

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%