What percent of people would you expect to complete the form in less than 4.15 hours? percent

What percent of people would you expect to complete the form in more than 4.15 hours?
percent

What percent of people would you expect to complete the form in less than 3.1 hours?
percent

What percent of people would you expect to complete the form in more than 3.1 hours?
percent

What percent of people would you expect to complete the form between 3.1 and 4.15 hours?
percent