The mass of packets of a breakfast cereal is normally distributed with a mean of 766 g and standard deviation of 22 g. (a) Find the probability that a packet chosen at random has mass (i) less than 753 g; (round to 3 decimal places) (ii) at least 792 g; (round to 3 decimal places) (iii) between 753 g and 792 g. (round to 3 decimal places) (b) Two packets are chosen at random. What is the probability that both packets have a mass which is less than 753 g? (round to 3 decimal places) (c) The mass of 65% of the packets is more than x grams. Find the value of x. 9 (round to nearest whole number)