The weights of 9-ounce bags of a particular brand of potato chips can be modeled by a normal distribution with mean u=9.12 ounces and standard deviation = 0.05 ounce. Use the empirical rule to answer the following questions. (a) What percent of bags weigh less than 9.07 ounces? (b) What proportion of bags weigh between 8.97 and 9.17 ounces? Enter your answer in decimal form. % (Do not round.) (Do not round.)