Q6 Juan and Callum write movie reviews for every movie they watch. For any given movie, Juan
Using tree diagrams or otherwise, find the probability that exactly one positive review is written, i
and Callum give it a positive review with independent
probabilities 0,4 and 0.3
respectively.
a) Juan and Callum watch a movie together.
b) Callum watches two movies on his own.
c) Juan watches three movies on his own.
d) Juan and Callum watch a movie together, then Callum watches another movie on his own.
e) Juan watches two movies on his own, then Callum watches a movie on his own.