solution and answers please

An athletics coordinator collected the 100-meter sprint times for 15-year old students at Ryde Secondary College. The sprint time assumes to follow a normal distribution with a mean of )4: 14.23 seconds and a variance of 02 : 0.6561 secondsz. Draw diagrams to help you solve the following problems 1. (1 mark) For a group of 41 fifteenyear students randomly selected at Ryde Secondary College, how many of them will have a 100-meter sprint time of 15.18 seconds or less? (integer) 2. (2 mark) How fast does a 15-year old student at Ryde Secondary College have to run to be the fastest 16% of 100-meter sprinters? (3dp) (Hint: Draw a diagram to help check whether your answer makes sense or not)