7. The ages of starfish are approximately normally distributed, with a mean age of 35 years, and a standard deviation of 8 years. i. What percentage of starfish would you expect to be between 27 and 43 years old? ii. What is the z-score of a starfish that is 50 years old? ili. Would statisticians consider a starfish that is 55 years old to be unusual (significantly old)? Why or why not? iv. Assume that there are 2,000,000 starfish in the world. Use the Empirical Rule to estimate how many of those starfish are likely to be unusually old