All of them are statistical
Total number of balls = 8 + 14 = 22
P(2nd ball is purple) = 14/22 = 7/11
Answer: 7/11
The correct answer is: [C]: " f(x) = log₃ (x - 3) " .
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Answer: 0.31
Step-by-step explanation:
Let A denotes the event that the students report drinking alcohol and B denotes the students report using some type of tobacco product .
Given : P(A) =0.84 ; P(B)=0.33 and P(A∪B)=0.86
We know that 
Then, the probability that the student both drunk alcohol and used tobacco in the past month is given by :-

Hence, the probability that the student both drunk alcohol and used tobacco in the past month = 0.31