Number 4 :)

If Marla goes on road trip, what is the probability that she has time to listen to all 50 randomly selected songs during the drive? Robert is trying out for his school's swim team. His favorite event is the 100-yard freestyle and, to make the team, he must swim the event is less than 58 seconds. Recently, he has been timing himself and believes his average time for the event is 57.4 seconds with a standard deviation of 0.8 seconds. a. At tryouts, he gets to swim the event once while being timed by the coach. Can you determine the probability that Robert will make the team once he tries out? b. Robert's friend Hailey took AP Statistics. She looks at his past times for the event and thinks their distribution is approximately normal. Assume Hailey is correct and calculate the probability that Robert will make the team when he tries out. c. Hailey suggest Robert should ask to swim the event four different times and use the average as his qualifying time. Would this approach increase Robert's probability of making the team