Question

The two-way table displays the hair color of the sophomore (So), junior (Jr), and senior (Sr) classes at West Coast High School, represented by percents in the table.

A 5-column table has 3 rows. The first column has entries Blonde, brown, total. The second column is labeled Sophomore with entries 10, 10, 20. The third column is labeled Junior with entries 30, 20, 50. The fourth column is labeled Senior with entries 20, 10, 30. The fifth column is labeled Total with entries 60, 40, 100.

Let E be the event that the student is blond, and let F be the event that the student is a junior. Are events E and F independent?



P(E|F) =
%

P(E) =
%

Events E and F are
.

Answer 1

P(E|F) = 60%

P(E) = 60%

Events E and F are independent.