In a sample of 275 students, 20 say they are vegetarians. of the vegetarians, 9 eat both fish and eggs, 3 eat eggs but not fish, and 7 eat neither. choose one of the vegetarians at random. what is the probability that the chosen student eats fish or eggs?

We know that there is sample of 275 MHS Students 20 are vegetarians        9 eat both fish and eggs        3 eat eggs but not fish        8 eat neither Total 20   In a table:             FISH FISHc TOTAL EGGS     9        3       12 EGGSc   1         7        8 TOTAL    10       10      20   P(F U E) = 9 + 3 + 1 / 20 = 13/20 = 0.65 Or P(F U E) = 10/20 + 12/20 -9/20 = 13/20 = 0.65