I need help solving A-D

Question Help The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) What is the probability that a randomly selected bag contains between 1000 and 1500 chocolate chips, inclusive? (b) What is the probability that a randomly selected bag contains fewer than 1025 chocolate chips? (c) What proportion of bags contains more than 1175 chocolate chips? (d) What is the percentile rank of a bag that contains 1425 chocolate chips? (a) The probability that a randomly selected bag contains between 1000 and 1500 chocolate chips, inclusive, is (Round to four decimal places as needed.) (b) The probability that a randomly selected bag contains fewer than 1025 chocolate chips is (Round to four decimal places as needed Jim Question Viewer (c) The proportion of bags that contains more ulan TITS chocolate chips is (Round to four decimal places as needed.) (d) A bag that contains 1425 chocolate chips is in the st percentile. (Round to the nearest integer as needed.)