Solution Let SS be the event that she visits Starbucks.Let MM be the event that she buys Mocha.Given:P(S)=0.70, ~~~~P(M)= P(M|S)= P(M| S^c)= 0.60P(S)=0.70, P(M)=P(M∣S)=P(M∣Sc)=0.60Answera. 0.42 b. Yes c. 0.3 d. 0.88