Answer:
P( B | A) will actually be the probability of the polygraph test being wrong.
Step-by-step explanation:
The event A represents the event that the subject is telling the truth.
The event B represents the event when he fails the polygraph test, which is indicative of the fact that he is lying.
The notation P( B | A) describes the probability that the subject fails the polygraph test given that he is actually telling the truth.
So in retrospect P( B | A) will actually be the probability of the polygraph test being wrong.
Answer:
a. Draw a column for each ticket sold. (For 0-9, draw a bar upto 2. For 10-19, draw a bar upto 4. For 20-29, draw a bar upto 3. And for 30-39, draw a bar upto 1.
b. 10 students sold tickets
c. 40% of students sold 20 or more tickets
Thw answer would be 0.007
Yes... a half is equal to 10/20 and 11/20 is greater than 10/20 so 11/20 is greater than a half
