Snapchat users are known to upload photos on average 32 times in one day with a standard deviation of 4 photos in one day. It is assumed that the number of uploaded photos follows a Normal distribution. Answer the following questions (i) to (iii): (i) What is the probability that a person will upload at least 28 photos on a particular day? (3) (ii) What is the probability that a person uploads at most 18 photos over a 12 hour period? (3) MA4603 Science Mathematics 3 Dr Michael Cauchi AUTUMN 2019 3 of 12 (iii) What is the probability that a person uploads between 8 and 19 photos inclusively in a 12 hour period?