The probability that a randomly selected adult owns an eread

The probability that a randomly selected adult owns an e-reader is 0.26. The probability that a randomly selected adult owns a tablet computer is 0.31. The probability that a randomly selected adult owns both kinds of devices is 0.17. The events E: a randomly selected adult owns an e-reader and T: a randomly selected adult owns a tablet computer are

A Independent because P(E) x P(T) = P(E and T) B Independent because P(E) x P(T) P(E and T) C Dependent because P(E) x P(T) = P(E and T) D Dependent because P(E) x P(T) P(E and T) E impossible to tell if independent or not due to insufficient information

Solution

P(E) = P( e - reader) = 0.26
P(T) = P( tablet computer) = 0.31
P( E n T) = P(e -reader and tablet) = 0.17

P(E) x P(T) = 0.26*0.31 = 0.0806

[ANSWER] D. Dependent because P(E) x P(T) P(E and T)