The life spans of a species of fruit flies have a bell shaped distribution with a mean of 33 days and a standard deviation of 4 days.

1.      The life spans of a species of fruit flies have a bell shaped distribution with a mean of 33 days and a standard deviation of 4 days.

c.      If a sample of 40 fruit flies is studied, how many fruit flies would have a life span between 25 and 41 days according to Chebychev's theorem.