4. [9 marks] A team of researchers conducted a survey to quantify the extent, and to measure student а perception, of al

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please please solve all parts of this question perfectly and urgently. make sure to do it on a page with clear handwriting. mention each part answer as you give.
I will give positive rating if you solve all parts of this question perfectly and urgently and do on page with answers mentioned.
I don't have much time.
4. [9 marks] A team of researchers conducted a survey to quantify the extent, and to measure student а perception, of alcohol and tobacco use. Out of all students at one university, 15% smoke cigarettes, 81% consume alcohol, and 9% smoke cigarettes and consume alcohol. Let C represent the event a student smokes cigarettes, and A represent the event a student consumes alcohol. Therefore P(C)= 0.15 and P(A) = 0.81. Note: For each part of this question, you must first express each probability in terms of the events C and A, and justify any computation through the use of an explicitly stated formula. You may draw a Venn diagram when helpful but it is not a sufficient explanation on its own.
(e) What proportion of all students engage in at least one of these two behaviours? (f) What is the probability that a student smokes cigarettes but does not consume alcohol?